US Patent No: 7,455,765

Number of patents in Portfolio can not be more than 2000

Wastewater treatment system and method

ALSO PUBLISHED AS: 20070170112
1 Status Updates

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The invention is directed to a wastewater treatment system having an anoxic biological treatment zone, an aerobic biological treatment zone and a separator. The concentration of oxygen in streams within the system is strategically managed for improved removal of nutrient from the wastewater. A source of biodegradable carbon may be introduced to reduce the concentration of oxygen within the system. An effective treatment time under anoxic or aerobic conditions may further be varied.

Loading the Abstract Image... loading....

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
EVOQUA WATER TECHNOLOGIES LLCALPHARETTA, GA270

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Elefritz, Robert A Ormond Beach, FL 4 23
Liu, Wenjun King of Prussia, PA 25 146

Cited Art Landscape

Patent Info (Count) # Cites Year
 
EVOQUA WATER TECHNOLOGIES LLC (30)
5,895,570 Modular filtering system 49 1996
6,159,373 Cleaning of hollow fibre membranes 52 1997
6,077,435 Filtration monitoring and control system 85 1998
6,156,200 Gas-scrubbed hollow fiber membrane module 99 1998
6,254,773 Microporous membrane filtration assembly 58 1999
6,555,005 Scouring method 72 1999
6,202,475 Predicting logarithmic reduction values 53 1999
D478913 Manifold header 43 2000
D462699 Manifold header cap 50 2000
6,524,481 Apparatus and method for cleaning membrane filtration modules 68 2001
6,969,465 Scouring method 42 2002
6,783,008 Hollow fibre restraining system 40 2002
6,955,762 Method of cleaning membranes 31 2002
6,641,733 Apparatus and method for cleaning membrane filtration modules 54 2002
6,872,305 Membrane filtration system 39 2003
6,821,420 Apparatus and method for cleaning membrane filtration modules 41 2003
6,884,350 Modified membranes 44 2003
7,083,733 Water treatment system and method 40 2003
7,264,716 Membrane filtration manifold system 32 2003
2007/0007,214 Mixing chamber 35 2003
7,226,541 Membrane polymer compositions 37 2003
7,018,533 High solids module 33 2004
6,841,070 Apparatus and method for cleaning membrane filtration modules 35 2004
6,962,258 Hollow fiber restraining system 30 2004
7,300,022 Modified membranes 39 2004
7,247,238 Poly(ethylene chlorotrifluoroethylene) membranes 36 2004
2007/0075,021 Module cleaning method 31 2004
7,160,463 Methods of minimizing the effect of integrity loss in hollow fibre membrane modules 32 2004
2007/0227,973 Reduction of Backwash liquid Waste 30 2005
2006/0131,234 Scouring method 32 2005
 
ZENON TECHNOLOGY PARTNERSHIP (28)
5,639,373 Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate 143 1995
5,783,083 Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces 134 1996
6,120,688 Portable reverse osmosis unit for producing drinking water 48 1998
6,042,677 Potted header for hollow fiber membranes and method for making it 84 1999
RE37549 Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate 74 1999
6,354,444 Hollow fiber membrane and braided tubular support therefor 77 1999
6,193,890 System for maintaining a clean skein of hollow fibers while filtering suspended solids 96 1999
6,303,035 Immersed membrane filtration process 56 1999
6,375,848 Water filtration using immersed membranes 63 1999
6,245,239 Cyclic aeration system for submerged membrane modules 76 2000
6,325,928 Immersed membrane element and module 72 2000
6,294,039 Potted header for hollow fiber membranes 69 2000
6,893,568 Immersed membrane filtration system and overflow process 48 2000
6,406,629 Biological process for removing phosphorous involving a membrane filter 62 2000
6,550,747 Cyclic aeration system for submerged membrane modules 61 2001
6,656,356 Aerated immersed membrane system 60 2001
6,620,319 Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes 64 2001
6,899,812 Water filtration using immersed membranes 37 2002
6,708,957 Moving aerator for immersed membranes 43 2002
6,685,832 Method of potting hollow fiber membranes 57 2002
6,863,823 Inverted air box aerator and aeration method for immersed membrane 39 2002
6,682,652 Apparatus for withdrawing permeate using an immersed vertical skein of hollow fiber membranes 50 2002
6,814,861 Ultrafiltration and microfiltration module and system 35 2002
6,706,189 Cyclic aeration system for submerged membrane modules 60 2003
2003/0146,153 Chemical cleaning backwash for normally immersed membranes 32 2003
2004/0007,525 Maintenance cleaning for membranes 32 2003
6,881,343 Cyclic aeration system for submerged membrane modules 37 2003
7,052,610 Immersed membrane filtration system and overflow process 34 2005
 
ZENON ENVIRONMENTAL INC. (22)
5,227,063 Tubular membrane module 56 1990
5,104,535 Frameless array of hollow fiber membranes and module containing a stack of arrays 65 1990
5,182,019 Cartridge of hybrid frameless arrays of hollow fiber membranes and module containing an assembly of cartridges 68 1992
5,248,424 Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate 151 1992
5,403,479 In situ cleaning system for fouled membranes 95 1993
5,501,798 Microfiltration enhanced reverse osmosis for water treatment 70 1994
5,670,053 Purification of gases from water using reverse osmosis 86 1995
5,766,479 Production of high purity water using reverse osmosis 91 1995
5,958,243 Apparatus and method for membrane filtration with enhanced net flux 63 1997
5,910,250 Baffle for conversion of fine bubbles to coarse while filtering with a vertical skein of hollow fibers 101 1997
5,914,039 Filtration membrane with calcined .alpha.-alumina particles therein 74 1997
5,944,997 System for maintaining a clean skein of hollow fibers while filtering suspended solids 115 1998
5,997,745 Method for producing high purity water using triple pass reverse osmosis (TPRO) 57 1998
6,045,698 Method for cleaning a filtration installation of the type with immersed membranes 72 1998
6,024,872 Method of making a dope comprising hydrophilized PVDF and .alpha.-alumina, and a membrane made therefrom 67 1999
6,214,231 System for operation of multiple membrane filtration assemblies 71 1999
6,361,695 Shipboard wastewater treatment system 65 2000
6,485,645 Biological process for removing phosphorus involving a membrane filter 59 2002
6,645,374 Membrane module for gas transfer and membrane supported biofilm process 60 2003
6,964,741 Apparatus for withdrawing permeate using an immersed vertical skein of hollow fiber membranes 34 2003
2005/0115,899 Membrane bioreactor having single header membrane module 35 2004
2005/0194,315 Membrane batch filtration process 32 2005
 
PALL CORPORATION (14)
4,340,479 Process for preparing hydrophilic polyamide membrane filter media and product 217 1980
4,431,545 Microporous filter system and process 91 1982
4,609,465 Filter cartridge with a connector seal 126 1984
4,702,840 Charge modified polyamide membrane 82 1986
4,707,266 Polyamide membrane with controlled surface properties 73 1986
4,774,132 Polyvinylidene difluoride structure 47 1986
4,839,048 Container for pressurized fluid 43 1986
5,417,101 Method and apparatus for testing the integrity of filter elements 76 1992
6,045,899 Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters 116 1996
6,083,393 Hydrophilic membrane 59 1997
6,039,872 Hydrophilic membrane 60 1998
6,770,202 Porous membrane 55 2002
6,811,696 Hydrophobic membrane materials for filter venting applications 40 2002
6,884,375 Hydrophobic membrane materials for filter venting applications 46 2004
 
U.S. FILTER WASTEWATER GROUP, INC. (10)
4,931,186 Concentration of solids in a suspension 63 1986
4,767,539 Cleaning of hollow fiber filters utilized in lumenal gas flow 70 1987
4,876,012 Hollow fibre filter cartridge and header 57 1988
5,024,762 Concentration of solids in a suspension 59 1990
2002/0148,767 Membrane filtration manifold system 49 2001
2003/0178,365 Scouring method 49 2003
2003/0226,797 Fibre membrane arrangement 46 2003
2004/0084,369 Scouring method 40 2003
2004/0178,154 Scouring method 32 2004
7,223,340 Hollow fibre restraining system 32 2005
 
SIEMENS WATER TECHNOLOGIES CORP. (7)
4,919,815 Two-stage anaerobic/aerobic treatment process 83 1989
5,094,750 Hollow fibre filter cartridge and header 52 1989
5,194,149 Filter cartridge manifold 56 1991
5,192,442 Multiple zone batch treatment process 73 1991
5,405,528 Modular microporous filter assemblies 73 1992
2004/0217,053 Method of cleaning membrane modules 42 2004
2007/0056,905 Continuous pressure decay test 31 2005
 
The Dow Chemical Company (7)
4,226,921 Selective plugging of broken fibers in tubesheet-hollow fiber assemblies 40 1979
4,656,865 System for analyzing permeation of a gas or vapor through a film or membrane 75 1985
4,797,187 Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups 63 1987
4,904,426 Process for the production of fibers from poly(etheretherketone)-type polymers 49 1988
4,963,304 Process for preparing microporous membranes 55 1988
5,015,275 Isotropic microporous syndiotactic polystyrene membranes and processes for preparing the same 47 1989
5,221,478 Chromatographic separation using ion-exchange resins 52 1992
 
3M INNOVATIVE PROPERTIES COMPANY (6)
6,096,213 Puncture-resistant polyolefin membranes 63 1998
6,277,512 Polymer electrolyte membranes from mixed dispersions 84 1999
6,423,784 Acid functional fluoropolymer membranes and method of manufacture 59 1999
6,790,912 Extrudable fluoropolymer blends 46 2001
6,861,466 Fluoropolymer dispersion containing no or little low molecular weight fluorinated surfactant 78 2004
7,041,728 Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant 63 2004
 
E. I. DU PONT DE NEMOURS AND COMPANY (5)
4,988,444 Prevention of biofouling of reverse osmosis membranes 43 1989
5,137,631 Multiple bundle permeator 68 1991
5,320,760 Method of determining filter pluggage by measuring pressures 55 1992
5,262,054 Process for opening reverse osmosis membranes 39 1992
5,470,469 Hollow fiber cartridge 99 1994
 
Memtec Limited (5)
4,816,160 Cooling hollow fibre cross-flow separators 57 1986
4,793,932 Variable volume filter or concentrator 65 1986
4,935,143 Cleaning of filters 64 1988
4,921,610 Cleaning of hollow fibre filters 88 1988
5,918,264 Fiber monitoring system 53 1995
 
AKZO N.V. (4)
4,359,359 Production of polyurethane embedding materials and use thereof 55 1981
4,933,084 Dialysis membrane of cellulose in the shape of a hollow fiber, and process for the production thereof 37 1985
4,744,240 Method for determining the bubble point or the largest pore of membranes or of filter materials 68 1987
5,066,401 Flat or capillary membrane based on a homogeneous mixture of polyvinylidene fluoride and a second polymer which can be rendered hydrophilic by chemical reaction 69 1990
 
SIEMENS INDUSTRY, INC. (4)
5,401,405 Combined air/water backwash in a travelling bridge filter 48 1993
5,643,455 Concentration of solids in a suspension using hollow fibre membranes 102 1995
2006/0261,007 Methods of cleaning membrane modules 32 2004
2006/0000,775 Scouring method 32 2005
 
ASAHI KASEI KABUSHIKI KAISHA (3)
6,299,773 Porous polyvinylidene fluoride resin film and process for producing the same 51 1999
6,322,703 Method for purifying aqueous suspension 43 2000
7,160,455 Hollow fiber membrane module 40 2002
 
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA (3)
4,623,670 Porous fluorine resin membrane and process for preparing the same 54 1985
4,702,836 Porous fluorine resin membrane and process for preparing the same 54 1986
6,495,041 Method for purifying aqueous suspension 43 2001
 
Baxter Travenol Laboratories, Inc. (3)
4,227,295 Method of potting the ends of a bundle of hollow fibers positioned in a casing 51 1978
4,248,648 Method of repairing leaks in a hollow capillary fiber diffusion device 59 1979
4,389,363 Method of potting microporous hollow fiber bundles 53 1980
 
EBARA CORPORATION (3)
4,775,471 Hollow fiber filter device 61 1986
4,876,006 Hollow fiber filter device 113 1988
5,744,037 Method of treating foul water 43 1996
 
Japan Organo Co., Ltd. (3)
4,886,601 Column filter using bundles of long fibers 60 1989
5,209,852 Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module 91 1991
5,151,191 Filtration process using hollow fiber membrane module 73 1991
 
KUBOTA CORPORATION (3)
5,192,456 Apparatus for treating activated sludge and method of cleaning it 108 1992
5,451,317 Solid-liquid separator 60 1994
5,647,988 Method of back-washing submerged-type ceramic membrane separation apparatus 74 1994
 
MEDIVATORS INC. (3)
5,543,002 Method of manufacture of hollow fiber filter cartridge with porous ring 57 1994
5,554,283 Hollow fiber filter having a porous collar/ring seal 75 1995
5,531,848 Method of manufacturing of hollow fiber cartridge with porous ring 63 1995
 
MILLIPORE CORPORATION (3)
5,079,272 Porous membrane formed from interpenetrating polymer network having hydrophilic surface 75 1989
5,211,823 Process for purifying resins utilizing bipolar interface 86 1991
5,158,721 Porous membrane formed from interpenetrating polymer network having hydrophilic surface 63 1991
 
MITSUBISHI RAYON CO., LTD. (3)
5,480,553 Hollow fiber membrane module 99 1993
5,677,360 Hydrophilic polymer alloy, fiber and porous membrane comprising this polymer alloy, and methods for preparing them 42 1995
6,280,626 Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly 73 1999
 
Mobil Oil Corporation (3)
5,069,065 Method for measuring wettability of porous rock 71 1991
5,297,420 Apparatus and method for measuring relative permeability and capillary pressure of porous rock 75 1993
5,491,023 Film composition 55 1994
 
PERMEA, INC. (3)
4,183,890 Method of cutting hollow filaments embedded in resinous mass 39 1977
4,369,605 Methods for preparing tube sheets for permeators having hollow fiber membranes 46 1980
4,687,578 Fluid separation membranes 53 1985
 
SEITZ-FILTER-WERKE GMBH UND CO. (3)
5,034,125 Membrane filtering device for micro and ultra filtration of fluids by the crossflow method 54 1990
5,169,528 Filter element 49 1990
5,290,457 Filter element with regenerable bulk material filling and method for making same 57 1992
 
TEIJIN LIMITED (3)
4,302,336 Semipermeable composite membrane 72 1979
4,353,802 Semipermeable composite membrane 59 1979
4,388,189 Process for preparation of improved semipermeable composite membranes 75 1980
 
AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH (2)
4,407,975 Polymeric membrane having maleic anhydride residues 43 1982
4,491,522 Anaerobic digestion process for organic wastes 53 1983
 
Akzona Incorporated (2)
4,247,498 Methods for making microporous products 218 1978
4,519,909 Microporous products 106 1979
 
BASF AKTIENGESELLSCHAFT (2)
5,094,867 Removal of heavy metal ions from wine and wine-like beverages 45 1991
6,264,839 Phosphonomethylated polyvinylamines and preparation and use thereof 44 1993
 
Bayer Aktiengesellschaft (2)
4,968,430 Composite membranes, processes for their preparation and their use 65 1989
5,490,939 Process for reconcentrating overspray from one-component coating compositions 45 1995
 
CELGARD LLC (2)
5,043,113 Process for formation of halogenated polymeric microporous membranes having improved strength properties 41 1990
6,149,817 Shell-less hollow fiber membrane fluid contactor 36 1999
 
CORNING INCORPORATED (2)
4,781,831 Cross-flow filtration device with filtrate flow conduits and method of forming same 77 1987
5,275,766 Method for making semi-permeable polymer membranes 47 1992
 
I. KRUGER INC. (2)
4,271,026 Control of activated sludge wastewater treating process for enhanced phosphorous removal 67 1979
7,147,778 Method and system for nitrifying and denitrifying wastewater 41 2006
 
IONICS, INCORPORATED (2)
5,066,375 Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack 108 1990
5,147,553 Selectively permeable barriers 76 1991
 
KOCH MEMBRANE SYSTEMS, INC. (2)
6,074,718 Self supporting hollow fiber membrane and method of construction 47 1996
6,890,435 Hollow fiber microfiltration membranes and a method of making these membranes 51 2002
 
KURARAY CO., LTD. (2)
4,190,411 Centrifugal potting apparatus 44 1978
4,547,289 Filtration apparatus using hollow fiber membrane 81 1984
 
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE (2)
4,670,145 Multiple bundle fluid separation apparatus 74 1986
6,290,756 Hollow fiber membrane tubesheets of variable epoxy composition and hardness 46 1997
 
MEMBRANA GMBH (2)
4,708,799 Hollow fiber membrane for plasma separation 59 1985
4,968,733 Process for producing microporous powders and membranes 90 1989
 
MILLIPORE INVESTMENT HOLDINGS LIMITED (2)
4,203,848 Processes of making a porous membrane material from polyvinylidene fluoride, and products 112 1977
4,632,745 Electrodeionization apparatus 152 1985
 
NEPHROS, INC. (2)
6,315,895 Dual-stage hemodiafiltration cartridge 50 1999
6,635,179 Sterile fluid filtration cartridge and method for using same 48 1999
 
NITTO DENKO CORPORATION (2)
6,432,310 Methods of running and washing spiral wound membrane module 44 2000
2003/0127,388 Treatment system having spiral membrane element and method for operating the treatment system 32 2002
 
OVIVO LUXEMBOURG S.A.R.L. (2)
6,743,362 Sewage treatment process 40 2002
6,712,970 Sewage treatment process with phosphorus removal 42 2002
 
PTI TECHNOLOGIES, INC. (2)
4,218,324 Filter element having removable filter media member 67 1979
4,812,235 Filter element assembly replaceable mesh pack 62 1983
 
SPECIALTY MATERIALS INC. (2)
4,384,474 Method and apparatus for testing and using membrane filters in an on site of use housing 71 1981
4,888,115 Cross-flow filtration 64 1983
 
SUMITOMO HEAVY INDUSTRIES, LTD. (2)
6,284,135 Membrane filter apparatus with gas discharge cleaning means 67 1998
6,402,955 Method for operating a membrane filter having a gas discharge cleaning means 53 2001
 
TORAY INDUSTRIES, INC. (2)
5,286,324 Polytetrafluoroethylene resin porous membrane, separator making use of the porous membrane and methods of producing the porous membrane and the separator 49 1992
6,468,430 Method for inhibiting growth of bacteria or sterilizing around separating membrane 43 2000
 
USF FILTRATION AND SEPARATIONS GROUP INC. (2)
4,629,563 Asymmetric membranes 245 1981
5,906,742 Microfiltration membranes having high pore density and mixed isotropic and anisotropic structure 74 1997
 
ADVANCED CARDIOVASCULAR SYSTEMS, INC. (1)
6,994,867 Biocompatible carrier containing L-arginine 46 2002
 
AKAMAI TECHNOLOGIES, INC. (1)
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 25 2009
 
AKZO NOBEL N.V. (1)
6,214,232 Membrane module with layered hollow-fiber membranes 38 1999
 
ALBERT EINSTEIN COLLEGE OF MEDICINE OF YESHIVA UNIVERSITY (1)
5,358,732 Method and system for removing impurities from aliments 34 1993
 
Aqua-Aerobic Systems, Inc. (1)
5,951,878 Method and apparatus for cleaning filter material in a filter apparatus utilizing a suction generating nozzle 50 1998
 
AQUASOURCE (1)
5,393,433 Method using separation membranes to treat a fluid containing matter in suspension and in solution 43 1993
 
ASAHI GLASS COMPANY, LIMITED (1)
4,385,150 Organic solution of fluorinated copolymer having carboxylic acid groups 57 1981
 
ATARA ENVIRONMENTAL, INC. (1)
2004/0035,770 Dynamically responsive aerobic to anoxic inter-zone flow control system for single vessel multi-zone bioreactor wastewater treatment plants 40 2002
 
BATTELLE ENERGY ALLIANCE, LLC (1)
6,036,030 Method for producing a selectively permeable separation module 34 1997
 
BDF IP HOLDINGS LTD. (1)
6,723,758 Graft polymeric membranes and ion-exchange membranes formed therefrom 42 2001
 
BRENTWOOD INDUSTRIES, INC. (1)
6,869,534 Sludge digestion methods and apparatus 35 2003
 
CANANDAIGUA WINE COMPANY, INC. (1)
4,834,998 Ultrafiltration of red wines 34 1986
 
CH2M HILL, INC. (1)
6,946,073 Method for treating wastewater in a membrane bioreactor to produce a low phosphorus effluent 47 2003
 
CHAPIN MANUFACTURING, INC. (1)
6,440,303 Fluid filter 58 2001
 
CHEMFAB CORPORATION (1)
5,075,065 Method for manufacturing of cast films at high productivity 50 1989
 
CIENA CORPORATION (1)
7,706,687 Automatic provisioning of network services based on user application requirements 14 2001
 
Clack Corporation (1)
5,389,260 Brine seal for tubular filter 77 1993
 
CLARCOR ENGINE MOBILE SOLUTIONS, LLC (1)
6,048,455 Filter assembly with conformal cartridge support structure 51 1997
 
CMS TECHNOLOGIES HOLDINGS, INC. (1)
6,221,247 Dioxole coated membrane module for ultrafiltration or microfiltration of aqueous suspensions 53 1999
 
COLEY PHARMACEUTICAL GROUP, INC. (1)
6,696,465 Sulfonamido substituted imidazopyridines 88 2002
 
COULTER ELECTRONICS, LTD. (1)
4,718,270 Porosimeter and methods of assessing porosity 65 1985
 
CYNARA COMPANY, THE (1)
5,192,478 Method of forming tubesheet for hollow fibers 50 1992
 
D.W. WALKER & ASSOCIATES (1)
5,198,116 Method and apparatus for measuring the fouling potential of membrane system feeds 58 1992
 
DELAWARE PMC-SIERRA, INC. (1)
5,479,590 Anti-aliasing method for polynomial curves using integer arithmetics 55 1994
 
Donaldson Company, Inc. (1)
4,779,448 Photoelectric bubble detector apparatus and method 59 1986
 
DOW GLOBAL TECHNOLOGIES INC. (1)
6,337,018 Composite membrane and method for making the same 57 2000
 
Dragerwerk Aktiengesellschaft (1)
4,840,227 Process for producing a hollow fiber mass transfer module and module produced by this process 47 1988
 
DRM, DR. MUELLER AG (1)
4,511,471 Filter apparatus for continuously thickening suspensions 56 1983
 
EASTMAN KODAK COMPANY (1)
6,721,529 Release agent donor member having fluorocarbon thermoplastic random copolymer overcoat 64 2001
 
ECO-TEC LIMITED (1)
4,673,507 Fluid treatment process and apparatus 61 1985
 
Ecodyne Corporation (1)
4,414,113 Liquid purification using reverse osmosis hollow fibers 74 1982
 
ECOTECHNIEK B.V. (1)
5,290,451 Method and apparatus for processing manure 47 1992
 
Electric Power Research Institute, Inc. (1)
5,005,430 Automated membrane filter sampler 59 1990
 
ELF ATOCHEM S.A. (1)
5,747,605 Mixtures of polymers including a halogen-containing polymer and compatibilized with a grafted aliphatic polyester 41 1995
 
EMD MILLIPORE CORPORATION (1)
7,005,100 Method for manufacturing a potted bundle of hollow fibers 31 2000
 
ENVIROGEN TECHNOLOGIES, INC. (1)
6,627,082 System and method for withdrawing permeate through a filter and for cleaning the filter in situ 36 2001
 
Exxon Research and Engineering Company (1)
5,396,019 Fluorinated polyolefin membranes for aromatics/saturates separation 53 1993
 
FILTERTEK INC. (1)
4,414,172 Process and apparatus for sealing a plurality of filter elements 65 1982
 
FILTERWERK MANN & HUMMEL GMBH (1)
4,688,511 Dirt accumulation indicator for air intake filters 80 1985
 
FORSCHUNGSZENTRUM KARLSRUHE GMBH (1)
4,797,211 Cross flow microfilter 102 1986
 
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. (1)
5,151,193 Polymer membranes on the basis of polyvinylidene fluoride, a process for the production thereof and their use 61 1990
 
FUJIFILM MANUFACTURING EUROPE B.V. (1)
6,890,645 Photocatalytic sheet or film and its manufacturing process 42 2001
 
GAMBRO DIALYSATOREN GMBH (1)
4,689,191 Method for setting the ends of hollow fiber bundles 54 1985
 
Gie Anjou-Recherche (1)
5,271,830 Water treatment installation for a tangential filtration loop 47 1990
 
Hampton Roads Sanitation District (1)
4,867,883 High-rate biological waste water treatment process using activated sludge recycle 79 1988
 
HANYU SANYO ELECTRONIC CO., LTD. (1)
2002/0070,157 Filter device 33 2001
 
HENKEL CHILE S.A. (HENKEL CHILE) (1)
6,727,305 Filler-containing polymer dispersion, method for its production and its use 43 2001
 
Henkel Kommanditgesellschaft auf Aktien (1)
4,650,596 Pour point depressants for paraffin solutions 41 1985
 
Hydrotreat, Inc. (1)
6,805,806 Method and apparatus for treatment of wastewater employing membrane bioreactors 45 2002
 
ILLINOIS TOOL WORKS INC. (1)
5,688,460 Process for making hermetically sealed filter units 55 1996
 
Industrial Air, Inc. (1)
4,193,780 Air filter construction 67 1978
 
INEOS BIO LIMITED (1)
6,368,819 Microbial process for the preparation of acetic acid as well as solvent for its extraction from the fermentation broth 63 2001
 
INVENSYS APV A/S (1)
5,906,739 Membrane filtration assembly 37 1996
 
JGC CORPORATION (1)
4,540,490 Apparatus for filtration of a suspension 81 1983
 
Kabushiki Kaisha Ito Tekkousho (1)
4,647,377 Filter apparatus 82 1984
 
KABUSHIKI KAISHA MEIDENSHA (1)
4,824,563 Equipment for treating waste water 67 1986
 
KABUSHIKI KAISHA TOSHIBA (1)
4,756,875 Apparatus for filtering water containing radioactive substances in nuclear power plants 66 1986
 
Kasasumi Laboratories, Inc. (1)
4,666,543 Hollow fiber device for removing waste material in the blood and a process of manufacture thereof 53 1984
 
KHUDENKO ENGINEERING, INC. (1)
5,846,424 Biological treatment of materials 50 1996
 
KINETICO INCORPORATED (1)
4,650,586 Fluid treatment system 65 1985
 
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (1)
7,314,563 Membrane coupled activated sludge method and apparatus operating anoxic/anaerobic process alternately for removal of nitrogen and phosphorous 28 2005
 
LANXESS DEUTSCHLAND GMBH (1)
6,387,189 Surface-cleaning method 38 1999
 
LIFESHIELD SCIENCES LLC (1)
2004/0158,312 Braided endoluminal device having tapered filaments 4 2003
 
LOCTITE CORPORATION (1)
5,135,663 Method of treating (meth)acrylic monomer-containing wastewater 44 1991
 
LYONNAISE DES EAUX-DUMEZ (1)
5,066,402 Method of changing operating modes in automatic water filtering apparatus using tubular membranes 98 1990
 
MARY C. MARTIS (1)
5,733,456 Environmental control for biological nutrient removal in water/wastewater treatment 74 1997
 
Massey-Ferguson Inc. (1)
4,192,750 Stackable filter head unit 91 1978
 
MEMCOR, INC., A CORP. OF DE (1)
4,614,109 Method and device for testing the permeability of membrane filters 76 1985
 
MEMTEC AMERICA CORPORATION (1)
5,468,397 Gas backwash of pleated filters 48 1993
 
Memtec Japan Limited (1)
5,353,630 Apparatus for testing membrane filter integrity 70 1993
 
Micron Separations, Inc. (1)
5,411,663 Alcohol-insoluble nylon microporous membranes 43 1993
 
MILLIPORE S.A.S. (1)
5,556,591 Membrane sealing techniques using thermoplastic polymers 43 1994
 
MOCON, INC. (1)
4,660,411 Apparatus for measuring transmission of volatile substances through films 62 1985
 
MUELLER, ERICH, GEISMAYERSTR. 7, A-5020 SALZBURG, AUSTRIA (1)
5,059,317 Transportable apparatus for producing drinking water 71 1989
 
NALCO COMPANY (1)
5,419,816 Electrolytic process and apparatus for the controlled oxidation of inorganic and organic species in aqueous solutions 71 1993
 
NATIONAL RESEARCH COUNCIL OF CANADA (1)
6,066,401 Wide-band two-layer antireflection coating for optical surfaces 38 1998
 
Nishihara Environmental Sanitation Research Corporation Limited (1)
5,098,567 Waste water treating process 46 1990
 
NXSTAGE MEDICAL, INC. (1)
6,702,561 Devices for potting a filter for blood processing 51 2001
 
ONDEO DEGREMONT, INC. (1)
6,808,629 Method for effluent purification 29 2003
 
ORGANO CORPORATION (1)
5,525,220 Filtration equipment 42 1994
 
ORGANO CORPORATION 5-16, HONGO 5-CHOME, BUNKYO-KU (1)
5,484,528 Filtration equipment for hollow fiber module 51 1994
 
OSMONICS, INC. (1)
4,846,970 Cross-flow filtration membrane test unit 79 1987
 
OTV SA (1)
5,607,593 Installation for making water potable with submerged filtering membranes 116 1994
 
PALL FILTRATION AND SEPARATIONS GROUP INC. (1)
6,146,747 Highly porous polyvinylidene difluoride membranes 71 1998
 
PALL SEITZSCHENK FILTERSYSTEMS GMBH (1)
6,974,554 Potting method 39 2003
 
PBI-DANSENSOR A/S (1)
5,138,870 Apparatus for measuring water vapor permeability through sheet materials 60 1991
 
PPG INDUSTRIES, INC. (1)
4,610,789 Filtration cartridge and reactor 39 1985
 
Rhone-Poulenc Recherches (1)
4,810,384 Hydrophilic PVDF semipermeable membrane 74 1987
 
ROCHEM ULTRAFILTRATIONS SYSTEME GESELLSCHAFT FUR ABWASSERREINIGUNG MBH (1)
6,126,819 Apparatus for the treatment of liquids contaminated by foreign substances 43 1998
 
ROTEM INDUSTRIES LTD. (1)
5,575,963 Selective clogging of failed fibers 34 1994
 
Sartorius GmbH (1)
4,969,997 Fluid-impermeable areas on porous membrane filters and their application 40 1989
 
SCIMAT LIMITED (1)
5,198,162 Microporous films 53 1989
 
SECURTIY STATE BANK OF PINE ISLAND (1)
5,361,625 Method and device for the measurement of barrier properties of films against gases 65 1993
 
SEVERN TRENT SERVICES-WATER PURIFICATION SOLUTIONS, INC. (1)
7,022,233 Biologically active reactor system and method for treating wastewater 32 2004
 
SIEMENS WATER TECHNOLOGIES HOLDING CORP. (1)
5,104,546 Pyrogens separations by ceramic ultrafiltration 73 1990
 
SMARTFLOW TECHNOLOGIES, INC. (1)
6,017,451 Spider fitting for multi-module filter system, and motive cart assembly comprising same 34 1997
 
SNECMA (1)
5,477,731 Method and apparatus for detecting a fouled fluid filter 66 1994
 
Standard Oil Company (Indiana) (1)
4,188,817 Method for detecting membrane leakage 59 1978
 
Stay Fresh, Inc. (1)
4,476,112 Food preservative composition 67 1983
 
STORK FRIESLAND B.V. (1)
6,576,136 Method and apparatus for removing floating substances and salts from a liquid by means of a membrane filtration 31 2001
 
STUDIECENTRUM VOOR KERNENERGIE, SCK (1)
4,253,936 Method of preparing a membrane consisting of polyantimonic acid powder and an organic binder 42 1980
 
Syrinx Research Pty. Ltd. (1)
4,749,487 High flux membrane 41 1985
 
TECHNOLOGIES AVANCEES & MEMBRANES INDUSTRIELLES (1)
6,780,466 Cross-flow filter membrane and method of manufacturing it 34 2002
 
TERUMO CARDIOVASCULAR SYSTEMS CORPORATION (1)
6,113,782 Potting of tubular bundles in housing 59 1998
 
TERUMO KABUSHIKI KAISHA (1)
5,552,047 Hollow filament blood processing apparatus 39 1995
 
The B. F. Goodrich Company (1)
4,496,470 Cleaning composition 53 1982
 
THERMA-WAVE, INC. (1)
6,952,258 Wafer chuck with integrated reference sample 32 2004
 
TOSHIBA AMERICA RESEARCH, INC. (1)
2002/0191,558 Distributed soft handoff among IP-based base stations 2 2001
 
TOYO BOSEKI KABUSHIKI KAISHA (1)
4,451,369 Fluid separation apparatus 105 1981
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
6,524,733 Fuel cell system with humidity determination 54 2000
 
U.S. FILTER/IONPURE, INC. (1)
4,687,561 Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions 103 1985
 
Union Camp Corporation (1)
5,888,401 Method and apparatus for reducing membrane fouling 54 1996
 
UNITED PET GROUP, INC. (1)
5,401,401 Hang on tank canister filter 72 1993
 
UNITED STATES FILTER CORPORATION (1)
4,636,296 Process and apparatus for treatment of fluids, particularly desalinization of aqueous solutions 101 1985
 
UNIVERSITY OF ARIZONA (1)
5,531,900 Modification of polyvinylidene fluoride membrane and method of filtering 66 1994
 
VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT (1)
7,172,701 Water treatment method using an inorganic powder reagent with high specific surface area including a step of recycling said reagent 44 2003
 
Voith Sulzer Paper Technology North America, Inc. (1)
5,968,357 Screen basket having a removable and replaceable cylindrical mesh liner 39 1998
 
VOST ENVIRONMENTAL TECHNOLOGIES, INC. (1)
7,018,530 Apparatus for biological treatment of waste waters 35 2004
 
W. L. GORE & ASSOCIATES, INC. (1)
5,843,069 Implantable containment apparatus for a therapeutical device and method for loading and reloading the device therein 147 1997
 
WATER PURE INC. (1)
4,784,771 Method and apparatus for purifying fluids 77 1987
 
WATER RECOVERY, INC. (1)
5,364,529 Wastewater treatment system 54 1992
 
X-FLOW B.V. (1)
5,076,925 Process for preparing a microporous membrane and such a membrane 79 1990
 
YAMAHA HATSUDOKI KABUSHIKI KAISHA (1)
4,763,612 Intake system for internal combustion engine 59 1987
 
ZAO STC "VALDIPOR" (1)
5,988,400 Pourous fluorocarbon membrane, method for producing thereof and cartridge filter based on said membrane 50 1997
 
ZENON TECHNOLOGY PARTNESHIP (1)
6,863,817 Membrane bioreactor, process and aerator 46 2002
 
Other [Check patent profile for assignment information] (24)
4,230,583 Supported anisotropic reverse osmosis membranes based on synthetic polyamides and processes for their preparation 52 1978
4,204,961 Filter apparatus with cleaning function 50 1979
4,350,592 Cartridge filter 48 1980
4,642,182 Multiple-disc type filter with extensible support 72 1985
4,999,038 Filter unit 92 1989
H1045 Air bubble leak detection test device 45 1990
5,364,527 Apparatus and process for treating water 51 1992
5,316,671 Submersible aeration train and aeration apparatus for biological purification of sewage 50 1993
5,374,353 Aeration train and aeration apparatus for biological purification of wastewater 37 1993
5,584,786 Abdominal exercise device 47 1994
5,597,732 Composting apparatus 45 1995
6,048,454 Oil filter pack and assembly 73 1997
5,942,113 Solid-liquid separating filter medium for sewage, waste water, etc 53 1997
5,989,428 Controlling wastewater treatment by monitoring oxygen utilization rates 51 1997
6,303,026 Wastewater treatment tank with influent gates and pre-react zone with an outwardly flared lower portion 31 1999
6,444,124 System and method for improved treatment of wastewater 46 2000
6,423,214 Device for decanting supernatant 32 2001
6,562,237 Biological nutrient removal using the olaopa process 29 2002
6,758,972 Method and system for sustainable treatment of municipal and industrial waste water 39 2002
2004/0145,076 Scouring method 40 2004
2004/0168,979 Scouring method 32 2004
2004/0232,076 Scouring method 37 2004
2005/0032,982 Modified membranes 37 2004
2006/0273,038 Chemical cleaning for membranes 32 2006

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
EVOQUA WATER TECHNOLOGIES LLC (20)
7,938,966 Backwash method 19 2003
8,268,176 Backwash 0 2004
8,758,621 Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis 0 2005
8,506,806 Methods and apparatus for removing solids from a membrane module 0 2005
8,377,305 Continuously variable aeration 0 2005
8,496,828 Cleaning in membrane filtration systems 0 2005
8,048,306 Scouring method 2 2005
8,293,098 Infiltration/inflow control for membrane bioreactor 0 2007
8,182,687 Methods of minimising the effect of integrity loss in hollow fibre membrane modules 0 2008
8,318,028 Infiltration/inflow control for membrane bioreactor 0 2008
7,722,769 Method for treating wastewater 21 2008
8,622,222 Membrane cleaning with pulsed airlift pump 0 2008
7,718,057 Wastewater treatment system 20 2008
8,512,568 Method of cleaning membrane modules 0 2009
8,382,981 Frame system for membrane filtration modules 0 2009
8,652,331 Membrane system backwash energy efficiency 0 2009
8,287,743 Membrane cleaning with pulsed airlift pump 1 2010
8,518,256 Membrane module 0 2011
8,372,276 Membrane cleaning with pulsed airlift pump 0 2011
8,623,202 Infiltration/inflow control for membrane bioreactor 0 2012
 
SIEMENS WATER TECHNOLOGIES LLC (1)
8,758,622 Simple gas scouring method and apparatus 0 2005
 
Other [Check patent profile for assignment information] (1)
8,790,515 Reduction of backwash liquid waste 0 2005

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 May 25, 2016
11.5 Year Payment $7400.00 $3700.00 $1850.00 May 25, 2020
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00

Full Text

 
loading....