Poly(ethylene chlorotrifluoroethylene) membranes

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7247238
APP PUB NO 20050098494A1
SERIAL NO

10914640

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Porous polymeric membranes including Halar (poly (ethylene chlorotrifluoroethylene)) and related compounds and the methods of production thereof which avoid the use of toxic solvents. Preferred solvents, coating agents and pore forming agents are citric acid ethyl ester or glycerol triacetate. The membranes may be in the form of a hollow fiber or flat sheet, and may include other agents to modify the properties of the membrane, such as the hydrophilic/hydrophobic balance. Leachable agents may also be incorporated into the membranes.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EVOQUA WATER TECHNOLOGIES LLCALPHARETTA, GA312

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Muller, Heinz-Joachim Thornleigh, AU 22 716
Mullette, Daniel Toongabbie, AU 10 229

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Kabushiki Kaisha Ito Tekkousho (1)
4647377 Filter apparatus 96 1984
 
Other [Check patent profile for assignment information] (9)
4642182 Multiple-disc type filter with extensible support 82 1985
4999038 Filter unit 113 1989
H1045 Air bubble leak detection test device 52 1990
5364527 Apparatus and process for treating water 63 1992
D396046 Steer device for an outboard motor 54 1996
6048454 Oil filter pack and assembly 85 1997
5942113 Solid-liquid separating filter medium for sewage, waste water, etc 65 1997
D400890 Automotive manifold 60 1997
2004/0145,076 Scouring method 50 2004
 
COULTER ELECTRONICS, LTD. (1)
4718270 Porosimeter and methods of assessing porosity 77 1985
 
ZAO STC "VALDIPOR" (1)
5988400 Pourous fluorocarbon membrane, method for producing thereof and cartridge filter based on said membrane 64 1997
 
Filterwerk Mann & Hummel GmbH (1)
4688511 Dirt accumulation indicator for air intake filters 94 1985
 
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. (1)
5151193 Polymer membranes on the basis of polyvinylidene fluoride, a process for the production thereof and their use 71 1990
 
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE (1)
4670145 Multiple bundle fluid separation apparatus 87 1986
 
STUDIECENTRUM VOOR KERNENERGIE, SCK (1)
* 4253936 Method of preparing a membrane consisting of polyantimonic acid powder and an organic binder 61 1980
 
MEMTEC LIMITED (5)
4816160 Cooling hollow fibre cross-flow separators 67 1986
4793932 Variable volume filter or concentrator 80 1986
4935143 Cleaning of filters 75 1988
4921610 Cleaning of hollow fibre filters 99 1988
5918264 Fiber monitoring system 65 1995
 
FORSCHUNGSZENTRUM KARLSRUHE GMBH (1)
4797211 Cross flow microfilter 116 1986
 
Memtec Japan Limited (1)
5353630 Apparatus for testing membrane filter integrity 83 1993
 
CUMMINS FILTRATION INC. (1)
2004/0094,459 LIQUID FILTER WITH SEPARATE AND CALIBRATED VAPOR RELEASE 2 2003
 
YAMAHA HATSUDOKI KABUSHIKI KAISHA (1)
4763612 Intake system for internal combustion engine 71 1987
 
SECURTIY STATE BANK OF PINE ISLAND (1)
5361625 Method and device for the measurement of barrier properties of films against gases 77 1993
 
DONALDSON COMPANY, INC. (1)
4779448 Photoelectric bubble detector apparatus and method 71 1986
 
KABUSHIKI KAISHA TOSHIBA (1)
4756875 Apparatus for filtering water containing radioactive substances in nuclear power plants 79 1986
 
MITSUBISHI RAYON CO., LTD. (2)
5480553 Hollow fiber membrane module 111 1993
6280626 Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly 88 1999
 
ECO-TEC LIMITED (1)
4673507 Fluid treatment process and apparatus 78 1985
 
CMS TECHNOLOGIES HOLDINGS, INC. (1)
6221247 Dioxole coated membrane module for ultrafiltration or microfiltration of aqueous suspensions 67 1999
 
AKZO N.V. (2)
4744240 Method for determining the bubble point or the largest pore of membranes or of filter materials 82 1987
5066401 Flat or capillary membrane based on a homogeneous mixture of polyvinylidene fluoride and a second polymer which can be rendered hydrophilic by chemical reaction 88 1990
 
SOCIETE NATINALE D'ETUDE ET DE CONSTRUCTIN DE MOTEURS D'AVIATION (S.N.E.C.M.A.) (1)
5477731 Method and apparatus for detecting a fouled fluid filter 78 1994
 
NALCO COMPANY (1)
5419816 Electrolytic process and apparatus for the controlled oxidation of inorganic and organic species in aqueous solutions 88 1993
 
ABC Group (1)
D396726 Combined air intake manifold and filter 56 1997
 
OTV SA (1)
5607593 Installation for making water potable with submerged filtering membranes 132 1994
 
E. I. DU PONT DE NEMOURS AND COMPANY (3)
5137631 Multiple bundle permeator 83 1991
5320760 Method of determining filter pluggage by measuring pressures 67 1992
5470469 Hollow fiber cartridge 119 1994
 
ORGANO CORPORATION (1)
5525220 Filtration equipment 54 1994
 
LYONNAISE DES EAUX-DUMEZ (1)
5066402 Method of changing operating modes in automatic water filtering apparatus using tubular membranes 116 1990
 
ZENON ENVIRONMENTAL INC. (11)
5227063 Tubular membrane module 68 1990
5104535 Frameless array of hollow fiber membranes and module containing a stack of arrays 81 1990
5182019 Cartridge of hybrid frameless arrays of hollow fiber membranes and module containing an assembly of cartridges 84 1992
5248424 Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate 164 1992
5403479 In situ cleaning system for fouled membranes 109 1993
5958243 Apparatus and method for membrane filtration with enhanced net flux 80 1997
5914039 Filtration membrane with calcined .alpha.-alumina particles therein 96 1997
5944997 System for maintaining a clean skein of hollow fibers while filtering suspended solids 131 1998
6045698 Method for cleaning a filtration installation of the type with immersed membranes 85 1998
6024872 Method of making a dope comprising hydrophilized PVDF and .alpha.-alumina, and a membrane made therefrom 87 1999
6645374 Membrane module for gas transfer and membrane supported biofilm process 76 2003
 
ZENON TECHNOLOGY PARTNERSHIP (15)
5639373 Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate 165 1995
5783083 Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces 152 1996
5910250 Baffle for conversion of fine bubbles to coarse while filtering with a vertical skein of hollow fibers 116 1997
6042677 Potted header for hollow fiber membranes and method for making it 98 1999
RE37549 Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate 87 1999
6354444 Hollow fiber membrane and braided tubular support therefor 106 1999
6214231 System for operation of multiple membrane filtration assemblies 85 1999
6193890 System for maintaining a clean skein of hollow fibers while filtering suspended solids 112 1999
6375848 Water filtration using immersed membranes 78 1999
6245239 Cyclic aeration system for submerged membrane modules 103 2000
6325928 Immersed membrane element and module 88 2000
6294039 Potted header for hollow fiber membranes 83 2000
6893568 Immersed membrane filtration system and overflow process 60 2000
6550747 Cyclic aeration system for submerged membrane modules 78 2001
6620319 Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes 80 2001
 
WATER PURE INC. (1)
4784771 Method and apparatus for purifying fluids 91 1987
 
DRAGERWERK AKTIENGESELLSCHAFT (1)
4840227 Process for producing a hollow fiber mass transfer module and module produced by this process 59 1988
 
KURARAY CO., LTD. (1)
4547289 Filtration apparatus using hollow fiber membrane 93 1984
 
ELECTRIC POWER RESEARCH INSTITUTE, INC. (1)
5005430 Automated membrane filter sampler 71 1990
 
ASAHI KASEI KABUSHIKI KAISHA (3)
* 4623670 Porous fluorine resin membrane and process for preparing the same 72 1985
6299773 Porous polyvinylidene fluoride resin film and process for producing the same 63 1999
6322703 Method for purifying aqueous suspension 55 2000
 
PBI DANSENSOR A/S (1)
5138870 Apparatus for measuring water vapor permeability through sheet materials 73 1991
 
KUBOTA CORPORATION (3)
5192456 Apparatus for treating activated sludge and method of cleaning it 122 1992
5451317 Solid-liquid separator 74 1994
5647988 Method of back-washing submerged-type ceramic membrane separation apparatus 89 1994
 
SUMITOMO HEAVY INDUSTRIES, LTD. (1)
6284135 Membrane filter apparatus with gas discharge cleaning means 80 1998
 
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA (2)
* 4702836 Porous fluorine resin membrane and process for preparing the same 73 1986
6495041 Method for purifying aqueous suspension 55 2001
 
TOYO BOSEKI KABUSHIKI KAISHA (1)
4451369 Fluid separation apparatus 121 1981
 
IONICS, INCORPORATED (1)
5066375 Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack 130 1990
 
HENKEL CHILE S.A. (1)
* 6727305 Filler-containing polymer dispersion, method for its production and its use 56 2001
 
MILLIPORE CORPORATION (3)
5079272 Porous membrane formed from interpenetrating polymer network having hydrophilic surface 88 1989
5211823 Process for purifying resins utilizing bipolar interface 105 1991
5158721 Porous membrane formed from interpenetrating polymer network having hydrophilic surface 79 1991
 
U.S. Filter/Ionpure, Inc. (1)
4687561 Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions 123 1985
 
CHEMFAB CORPORATION (1)
* 5075065 Method for manufacturing of cast films at high productivity 66 1989
 
ADVANCED CARDIOVASCULAR SYSTEMS, INC. (1)
6994867 Biocompatible carrier containing L-arginine 64 2002
 
Micron Separations, Inc. (1)
5411663 Alcohol-insoluble nylon microporous membranes 56 1993
 
JGC CORPORATION (1)
4540490 Apparatus for filtration of a suspension 94 1983
 
MILLIPORE INVESTMENT HOLDINGS LIMITED (1)
4632745 Electrodeionization apparatus 175 1985
 
SPECIALTY MATERIALS, INC. (2)
4384474 Method and apparatus for testing and using membrane filters in an on site of use housing 86 1981
4888115 Cross-flow filtration 77 1983
 
X-FLOW B.V. (1)
5076925 Process for preparing a microporous membrane and such a membrane 90 1990
 
Mobil Oil Corporation (2)
5069065 Method for measuring wettability of porous rock 86 1991
5297420 Apparatus and method for measuring relative permeability and capillary pressure of porous rock 98 1993
 
PALL CORPORATION (11)
4340479 Process for preparing hydrophilic polyamide membrane filter media and product 234 1980
4431545 Microporous filter system and process 106 1982
4609465 Filter cartridge with a connector seal 148 1984
4702840 Charge modified polyamide membrane 94 1986
5417101 Method and apparatus for testing the integrity of filter elements 103 1992
6045899 Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters 133 1996
6083393 Hydrophilic membrane 87 1997
6039872 Hydrophilic membrane 100 1998
* 6770202 Porous membrane 69 2002
6811696 Hydrophobic membrane materials for filter venting applications 52 2002
6884375 Hydrophobic membrane materials for filter venting applications 65 2004
 
TEIJIN LIMITED (1)
4388189 Process for preparation of improved semipermeable composite membranes 92 1980
 
MEMBRANA GMBH (2)
* 4708799 Hollow fiber membrane for plasma separation 72 1985
4968733 Process for producing microporous powders and membranes 123 1989
 
MOCON, INC. (1)
4660411 Apparatus for measuring transmission of volatile substances through films 74 1985
 
PTI TECHNOLOGIES, INC. (1)
4812235 Filter element assembly replaceable mesh pack 79 1983
 
CHAPIN MANUFACTURING, INC. (1)
6440303 Fluid filter 72 2001
 
CORNING INCORPORATED (1)
5275766 Method for making semi-permeable polymer membranes 60 1992
 
THE DOW CHEMICAL COMPANY (6)
4656865 System for analyzing permeation of a gas or vapor through a film or membrane 87 1985
4797187 Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups 78 1987
4904426 Process for the production of fibers from poly(etheretherketone)-type polymers 61 1988
4963304 Process for preparing microporous membranes 69 1988
5015275 Isotropic microporous syndiotactic polystyrene membranes and processes for preparing the same 59 1989
5221478 Chromatographic separation using ion-exchange resins 65 1992
 
FUJIFILM MANUFACTURING EUROPE B.V. (1)
6890645 Photocatalytic sheet or film and its manufacturing process 54 2001
 
OSMONICS, INC. (1)
4846970 Cross-flow filtration membrane test unit 94 1987
 
CELGARD, LLC (1)
* 5043113 Process for formation of halogenated polymeric microporous membranes having improved strength properties 53 1990
 
EVOQUA WATER TECHNOLOGIES LLC (11)
6159373 Cleaning of hollow fibre membranes 64 1997
6077435 Filtration monitoring and control system 101 1998
6156200 Gas-scrubbed hollow fiber membrane module 112 1998
6254773 Microporous membrane filtration assembly 76 1999
6555005 Scouring method 88 1999
6202475 Predicting logarithmic reduction values 63 1999
D478913 Manifold header 55 2000
D462699 Manifold header cap 62 2000
6524481 Apparatus and method for cleaning membrane filtration modules 82 2001
6641733 Apparatus and method for cleaning membrane filtration modules 68 2002
6884350 Modified membranes 54 2003
 
THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA (1)
5531900 Modification of polyvinylidene fluoride membrane and method of filtering 86 1994
 
D.W. WALKER & ASSOCIATES (1)
5198116 Method and apparatus for measuring the fouling potential of membrane system feeds 72 1992
 
MEMCOR, INC., A CORP. OF DE (1)
4614109 Method and device for testing the permeability of membrane filters 91 1985
 
DELAWARE PMC-SIERRA, INC. (1)
5479590 Anti-aliasing method for polynomial curves using integer arithmetics 69 1994
 
MEDIVATORS INC. (3)
5543002 Method of manufacture of hollow fiber filter cartridge with porous ring 68 1994
5554283 Hollow fiber filter having a porous collar/ring seal 88 1995
5531848 Method of manufacturing of hollow fiber cartridge with porous ring 79 1995
 
Rhone-Poulenc Recherches (1)
4810384 Hydrophilic PVDF semipermeable membrane 86 1987
 
ASAHI GLASS COMPANY, LIMITED (1)
4385150 Organic solution of fluorinated copolymer having carboxylic acid groups 67 1981
 
PALL FILTRATION AND SEPARATIONS GROUP INC. (1)
6146747 Highly porous polyvinylidene difluoride membranes 89 1998
 
UNITED STATES FILTER CORPORATION (1)
4636296 Process and apparatus for treatment of fluids, particularly desalinization of aqueous solutions 119 1985
 
SIEMENS WATER TECHNOLOGIES CORP. (4)
5094750 Hollow fibre filter cartridge and header 64 1989
5194149 Filter cartridge manifold 70 1991
5405528 Modular microporous filter assemblies 91 1992
2004/0217,053 Method of cleaning membrane modules 53 2004
 
3M INNOVATIVE PROPERTIES COMPANY (4)
6096213 Puncture-resistant polyolefin membranes 82 1998
6277512 Polymer electrolyte membranes from mixed dispersions 108 1999
6423784 Acid functional fluoropolymer membranes and method of manufacture 72 1999
6790912 Extrudable fluoropolymer blends 58 2001
 
LOCTITE CORPORATION (1)
5135663 Method of treating (meth)acrylic monomer-containing wastewater 56 1991
 
KOCH MEMBRANE SYSTEMS, INC. (2)
6074718 Self supporting hollow fiber membrane and method of construction 61 1996
6890435 Hollow fiber microfiltration membranes and a method of making these membranes 73 2002
 
SIEMENS WATER TECHNOLOGIES HOLDING CORP. (1)
5104546 Pyrogens separations by ceramic ultrafiltration 86 1990
 
SCIMAT LIMITED (1)
* 5198162 Microporous films 65 1989
 
NEPHROS, INC. (2)
6315895 Dual-stage hemodiafiltration cartridge 66 1999
6635179 Sterile fluid filtration cartridge and method for using same 62 1999
 
EBARA CORPORATION (2)
4775471 Hollow fiber filter device 75 1986
4876006 Hollow fiber filter device 128 1988
 
DRM, DR. MUELLER AG (1)
4511471 Filter apparatus for continuously thickening suspensions 68 1983
 
KINETICO INCORPORATED (1)
4650586 Fluid treatment system 78 1985
 
UNITED PET GROUP, INC. (1)
5401401 Hang on tank canister filter 85 1993
 
Exxon Research and Engineering Company (1)
* 5396019 Fluorinated polyolefin membranes for aromatics/saturates separation 66 1993
 
EASTMAN KODAK COMPANY (1)
6721529 Release agent donor member having fluorocarbon thermoplastic random copolymer overcoat 77 2001
 
Clack Corporation (1)
5389260 Brine seal for tubular filter 93 1993
 
PALL SEITZSCHENK FILTERSYSTEMS GMBH (1)
6974554 Potting method 52 2003
 
SIEMENS INDUSTRY, INC. (1)
5643455 Concentration of solids in a suspension using hollow fibre membranes 116 1995
 
Japan Organo Co., Ltd. (3)
4886601 Column filter using bundles of long fibers 71 1989
5209852 Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module 112 1991
5151191 Filtration process using hollow fiber membrane module 93 1991
 
BASF AKTIENGESELLSCHAFT (1)
6264839 Phosphonomethylated polyvinylamines and preparation and use thereof 59 1993
 
USF FILTRATION AND SEPARATIONS GROUP INC. (2)
4629563 Asymmetric membranes 282 1981
5906742 Microfiltration membranes having high pore density and mixed isotropic and anisotropic structure 100 1997
 
U.S. FILTER WASTEWATER GROUP, INC. (8)
4931186 Concentration of solids in a suspension 76 1986
4767539 Cleaning of hollow fiber filters utilized in lumenal gas flow 82 1987
4876012 Hollow fibre filter cartridge and header 67 1988
5024762 Concentration of solids in a suspension 73 1990
2002/0148,767 Membrane filtration manifold system 61 2001
2003/0178,365 Scouring method 59 2003
2003/0226,797 Fibre membrane arrangement 58 2003
2004/0084,369 Scouring method 50 2003
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2007/0007,197 System and method for synthesizing a polymeric membrane 6 2006
 
GENERAL ELECTRIC COMPANY (4)
8529814 Supported hollow fiber membrane 6 2010
9022229 Composite membrane with compatible support filaments 0 2012
8999454 Device and process for producing a reinforced hollow fibre membrane 1 2012
9227362 Braid welding 0 2012
 
BL TECHNOLOGIES, INC. (4)
9132390 Non-braided reinforced holow fibre membrane 0 2010
9061250 Non-braided, textile-reinforced hollow fiber membrane 0 2010
9221020 Method to make yarn-reinforced hollow fiber membranes around a soluble core 0 2011
9321014 Hollow fiber membrane with compatible reinforcements 0 2011
 
SIEMENS WATER TECHNOLOGIES CORP. (1)
* 2007/0138,090 Method and apparatus for treating wastewater 36 2006
 
SIEMENS WATER TECHNOLOGIES LLC (1)
8758622 Simple gas scouring method and apparatus 4 2005
 
EVOQUA WATER TECHNOLOGIES LLC (44)
7938966 Backwash method 30 2003
8372282 Mixing chamber 1 2003
8268176 Backwash 0 2004
8808540 Module cleaning method 0 2004
8758621 Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis 1 2005
7387723 Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials 41 2005
8524794 Hydrophilic membranes 0 2005
7931463 Apparatus for potting membranes 30 2005
7862719 Square membrane manifold system 37 2005
8790515 Reduction of backwash liquid waste 3 2005
8506806 Methods and apparatus for removing solids from a membrane module 4 2005
8377305 Continuously variable aeration 0 2005
8496828 Cleaning in membrane filtration systems 0 2005
8048306 Scouring method 3 2005
7455765 Wastewater treatment system and method 35 2006
7591950 Submerged cross-flow filtration 39 2006
8858796 Assembly for water filtration using a tube manifold to minimise backwash 0 2006
7563363 System for treating wastewater 37 2006
* 7632439 Poly(ethylene chlorotrifluoroethylene) membranes 38 2007
8293098 Infiltration/inflow control for membrane bioreactor 0 2007
8182687 Methods of minimising the effect of integrity loss in hollow fibre membrane modules 0 2008
8318028 Infiltration/inflow control for membrane bioreactor 0 2008
7722769 Method for treating wastewater 36 2008
8622222 Membrane cleaning with pulsed airlift pump 3 2008
7718065 Filtration method and apparatus 32 2008
7718057 Wastewater treatment system 33 2008
8512568 Method of cleaning membrane modules 0 2009
8382981 Frame system for membrane filtration modules 5 2009
8652331 Membrane system backwash energy efficiency 0 2009
8057574 Membrane post treatment 0 2009
8956464 Method of cleaning membranes 0 2010
8287743 Membrane cleaning with pulsed airlift pump 5 2010
8518256 Membrane module 3 2011
8262778 Membrane post treatment 0 2011
9022224 Fluid control manifold for membrane filtration system 1 2011
8372276 Membrane cleaning with pulsed airlift pump 3 2011
8623202 Infiltration/inflow control for membrane bioreactor 0 2012
9023206 Frame system for membrane filtration modules 0 2013
8840783 Water treatment membrane cleaning with pulsed airlift pump 0 2013
9533261 Potting method 0 2013
9573824 Membrane cleaning with pulsed airlift pump 0 2013
9206057 Membrane cleaning with pulsed airlift pump 0 2014
8894858 Method and assembly for water filtration using a tube manifold to minimize backwash 0 2014
9630147 Fluid control manifold for membrane filtration system 0 2014
 
KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (2)
* 9233342 Organic-inorganic porous membrane and a method for preparing the same 0 2013
* 2015/0129,489 ORGANIC-INORGANIC POROUS MEMBRANE AND A METHOD FOR PREPARING THE SAME 0 2013
 
MITSUI MINING & SMELTING CO., LTD. (1)
5312614 Method for producing white electrically conductive zinc oxide 3 1990
 
EVOQUA WATER TECHNOLOGIES PTY. LTD. (1)
9604166 Manifold arrangement 0 2012
 
ASAHI GLASS COMPANY, LIMITED (2)
8952083 Fluorocopolymer composition and its production process 0 2011
* 2011/0172,336 FLUOROCOPOLYMER COMPOSITION AND ITS PRODUCTION PROCESS 2 2011
* Cited By Examiner

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