US Patent No: 6,974,554
Number of patents in Portfolio can not be more than 2000
Potting method
Stats
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Dec 13, 2005
Issued date -
Sep 30, 2003
filing date -
10/676,458
serial no -
In Force
status
Importance
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Abstract
A method of forming a pot for an array of hollow fiber membranes (7) is provided, including the steps of placing the ends (6) of the fiber membranes (7) in a mould (5); forming a first layer (20) of curable resin material in a non-cured state around the fiber membrane ends (6), applying a second layer (21) of a polyurethane resin material to the first layer (20) prior to full curing of the first layer, the polyurethane resin material layer being chemically reactive with the first layer material to form an adhesive bond therebetween; at least partially curing both layers and removing the pot formed from the mould (5), wherein the second layer material is of higher flexibility than the first layer material when each layer is fully cured. Apparatus for performing the method is also disclosed.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,643,455 Concentration of solids in a suspension using hollow fibre membranes | 90 | 1995 | |
| 5,918,264 Fiber monitoring system | 42 | 1995 | |
| 6,159,373 Cleaning of hollow fibre membranes | 41 | 1997 | |
| 6,077,435 Filtration monitoring and control system | 71 | 1998 | |
| 6,156,200 Gas-scrubbed hollow fiber membrane module | 87 | 1998 | |
| 6,254,773 Microporous membrane filtration assembly | 39 | 1999 | |
| 6,555,005 Scouring method | 61 | 1999 | |
| 6,202,475 Predicting logarithmic reduction values | 42 | 1999 | |
| D462699 Manifold header cap | 39 | 2000 | |
| 6,524,481 Apparatus and method for cleaning membrane filtration modules | 55 | 2001 | |
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| 5,227,063 Tubular membrane module | 45 | 1990 | |
| 5,248,424 Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate | 139 | 1992 | |
| 5,403,479 In situ cleaning system for fouled membranes | 84 | 1993 | |
| 5,910,250 Baffle for conversion of fine bubbles to coarse while filtering with a vertical skein of hollow fibers | 87 | 1997 | |
| 5,914,039 Filtration membrane with calcined .alpha.-alumina particles therein | 59 | 1997 | |
| 5,944,997 System for maintaining a clean skein of hollow fibers while filtering suspended solids | 103 | 1998 | |
| 6,024,872 Method of making a dope comprising hydrophilized PVDF and .alpha.-alumina, and a membrane made therefrom | 53 | 1999 | |
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| 5,639,373 Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate | 128 | 1995 | |
| 5,783,083 Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces | 119 | 1996 | |
| 6,042,677 Potted header for hollow fiber membranes and method for making it | 70 | 1999 | |
| RE37549 Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate | 63 | 1999 | |
| 6,354,444 Hollow fiber membrane and braided tubular support therefor | 61 | 1999 | |
| 6,193,890 System for maintaining a clean skein of hollow fibers while filtering suspended solids | 83 | 1999 | |
| 6,294,039 Potted header for hollow fiber membranes | 54 | 2000 | |
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| 4,931,186 Concentration of solids in a suspension | 52 | 1986 | |
| 4,767,539 Cleaning of hollow fiber filters utilized in lumenal gas flow | 58 | 1987 | |
| 4,876,012 Hollow fibre filter cartridge and header | 46 | 1988 | |
| 5,024,762 Concentration of solids in a suspension | 48 | 1990 | |
| 2002/0148,767 Membrane filtration manifold system | 38 | 2001 | |
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| 4,816,160 Cooling hollow fibre cross-flow separators | 46 | 1986 | |
| 4,793,932 Variable volume filter or concentrator | 53 | 1986 | |
| 4,935,143 Cleaning of filters | 52 | 1988 | |
| 4,921,610 Cleaning of hollow fibre filters | 76 | 1988 | |
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| 4,609,465 Filter cartridge with a connector seal | 109 | 1984 | |
| 5,417,101 Method and apparatus for testing the integrity of filter elements | 64 | 1992 | |
| 6,083,393 Hydrophilic membrane | 45 | 1997 | |
| 6,039,872 Hydrophilic membrane | 47 | 1998 | |
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| 4,359,359 Production of polyurethane embedding materials and use thereof | 43 | 1981 | |
| 4,744,240 Method for determining the bubble point or the largest pore of membranes or of filter materials | 56 | 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 | 54 | 1990 | |
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| 5,137,631 Multiple bundle permeator | 56 | 1991 | |
| 5,320,760 Method of determining filter pluggage by measuring pressures | 44 | 1992 | |
| 5,470,469 Hollow fiber cartridge | 85 | 1994 | |
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| 5,543,002 Method of manufacture of hollow fiber filter cartridge with porous ring | 46 | 1994 | |
| 5,554,283 Hollow fiber filter having a porous collar/ring seal | 61 | 1995 | |
| 5,531,848 Method of manufacturing of hollow fiber cartridge with porous ring | 48 | 1995 | |
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| 5,079,272 Porous membrane formed from interpenetrating polymer network having hydrophilic surface | 63 | 1989 | |
| 5,211,823 Process for purifying resins utilizing bipolar interface | 72 | 1991 | |
| 5,158,721 Porous membrane formed from interpenetrating polymer network having hydrophilic surface | 52 | 1991 | |
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| 5,094,750 Hollow fibre filter cartridge and header | 41 | 1989 | |
| 5,194,149 Filter cartridge manifold | 44 | 1991 | |
| 5,405,528 Modular microporous filter assemblies | 62 | 1992 | |
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| 4,226,921 Selective plugging of broken fibers in tubesheet-hollow fiber assemblies | 30 | 1979 | |
| 4,656,865 System for analyzing permeation of a gas or vapor through a film or membrane | 61 | 1985 | |
| 5,221,478 Chromatographic separation using ion-exchange resins | 41 | 1992 | |
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| 4,248,648 Method of repairing leaks in a hollow capillary fiber diffusion device | 48 | 1979 | |
| 4,389,363 Method of potting microporous hollow fiber bundles | 41 | 1980 | |
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| 5,209,852 Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module | 79 | 1991 | |
| 5,151,191 Filtration process using hollow fiber membrane module | 61 | 1991 | |
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| 4,190,411 Centrifugal potting apparatus | 33 | 1978 | |
| 4,547,289 Filtration apparatus using hollow fiber membrane | 70 | 1984 | |
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| 4,670,145 Multiple bundle fluid separation apparatus | 63 | 1986 | |
| 6,290,756 Hollow fiber membrane tubesheets of variable epoxy composition and hardness | 33 | 1997 | |
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| 5,069,065 Method for measuring wettability of porous rock | 59 | 1991 | |
| 5,297,420 Apparatus and method for measuring relative permeability and capillary pressure of porous rock | 59 | 1993 | |
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| 4,218,324 Filter element having removable filter media member | 56 | 1979 | |
| 4,812,235 Filter element assembly replaceable mesh pack | 48 | 1983 | |
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| D396726 Combined air intake manifold and filter | 33 | 1997 | |
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| 4,385,150 Organic solution of fluorinated copolymer having carboxylic acid groups | 46 | 1981 | |
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| 4,227,295 Method of potting the ends of a bundle of hollow fibers positioned in a casing | 41 | 1978 | |
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| 6,440,303 Fluid filter | 46 | 2001 | |
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| 5,389,260 Brine seal for tubular filter | 64 | 1993 | |
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| 4,718,270 Porosimeter and methods of assessing porosity | 54 | 1985 | |
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| 5,192,478 Method of forming tubesheet for hollow fibers | 37 | 1992 | |
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| 5,198,116 Method and apparatus for measuring the fouling potential of membrane system feeds | 45 | 1992 | |
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| 4,779,448 Photoelectric bubble detector apparatus and method | 48 | 1986 | |
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| 4,511,471 Filter apparatus for continuously thickening suspensions | 45 | 1983 | |
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| 4,876,006 Hollow fiber filter device | 100 | 1988 | |
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| 4,673,507 Fluid treatment process and apparatus | 50 | 1985 | |
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| 5,005,430 Automated membrane filter sampler | 48 | 1990 | |
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| 4,414,172 Process and apparatus for sealing a plurality of filter elements | 53 | 1982 | |
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| 4,688,511 Dirt accumulation indicator for air intake filters | 65 | 1985 | |
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| 5,151,193 Polymer membranes on the basis of polyvinylidene fluoride, a process for the production thereof and their use | 47 | 1990 | |
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| 4,689,191 Method for setting the ends of hollow fiber bundles | 42 | 1985 | |
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| 5,688,460 Process for making hermetically sealed filter units | 44 | 1996 | |
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| 4,193,780 Air filter construction | 56 | 1978 | |
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| 4,540,490 Apparatus for filtration of a suspension | 70 | 1983 | |
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| 4,647,377 Filter apparatus | 71 | 1984 | |
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| 4,756,875 Apparatus for filtering water containing radioactive substances in nuclear power plants | 55 | 1986 | |
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| 4,797,211 Cross flow microfilter | 89 | 1986 | |
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| 4,650,586 Fluid treatment system | 53 | 1985 | |
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| 5,192,456 Apparatus for treating activated sludge and method of cleaning it | 96 | 1992 | |
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| 5,066,402 Method of changing operating modes in automatic water filtering apparatus using tubular membranes | 84 | 1990 | |
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| 4,192,750 Stackable filter head unit | 79 | 1978 | |
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| 4,614,109 Method and device for testing the permeability of membrane filters | 64 | 1985 | |
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| 5,353,630 Apparatus for testing membrane filter integrity | 59 | 1993 | |
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| 4,632,745 Electrodeionization apparatus | 136 | 1985 | |
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| 5,556,591 Membrane sealing techniques using thermoplastic polymers | 33 | 1994 | |
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| 5,480,553 Hollow fiber membrane module | 85 | 1993 | |
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| 4,660,411 Apparatus for measuring transmission of volatile substances through films | 51 | 1985 | |
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| 5,419,816 Electrolytic process and apparatus for the controlled oxidation of inorganic and organic species in aqueous solutions | 60 | 1993 | |
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| 6,702,561 Devices for potting a filter for blood processing | 37 | 2001 | |
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| 4,846,970 Cross-flow filtration membrane test unit | 67 | 1987 | |
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| 5,607,593 Installation for making water potable with submerged filtering membranes | 104 | 1994 | |
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| 6,146,747 Highly porous polyvinylidene difluoride membranes | 59 | 1998 | |
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| 5,138,870 Apparatus for measuring water vapor permeability through sheet materials | 49 | 1991 | |
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| 4,183,890 Method of cutting hollow filaments embedded in resinous mass | 28 | 1977 | |
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| 4,810,384 Hydrophilic PVDF semipermeable membrane | 63 | 1987 | |
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| 5,361,625 Method and device for the measurement of barrier properties of films against gases | 53 | 1993 | |
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| 5,104,546 Pyrogens separations by ceramic ultrafiltration | 62 | 1990 | |
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| 5,477,731 Method and apparatus for detecting a fouled fluid filter | 54 | 1994 | |
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| 4,384,474 Method and apparatus for testing and using membrane filters in an on site of use housing | 59 | 1981 | |
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| 4,188,817 Method for detecting membrane leakage | 46 | 1978 | |
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| 6,113,782 Potting of tubular bundles in housing | 42 | 1998 | |
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| 4,451,369 Fluid separation apparatus | 93 | 1981 | |
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| 4,687,561 Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions | 88 | 1985 | |
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| 5,066,375 Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack | 92 | 1990 | |
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| 5,401,401 Hang on tank canister filter | 59 | 1993 | |
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| 4,636,296 Process and apparatus for treatment of fluids, particularly desalinization of aqueous solutions | 87 | 1985 | |
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| 5,531,900 Modification of polyvinylidene fluoride membrane and method of filtering | 52 | 1994 | |
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| 4,784,771 Method and apparatus for purifying fluids | 66 | 1987 | |
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| 5,076,925 Process for preparing a microporous membrane and such a membrane | 68 | 1990 | |
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| 4,763,612 Intake system for internal combustion engine | 48 | 1987 | |
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| 4,642,182 Multiple-disc type filter with extensible support | 61 | 1985 | |
| 4,999,038 Filter unit | 77 | 1989 | |
| H1045 Air bubble leak detection test device | 36 | 1990 | |
| 5,364,527 Apparatus and process for treating water | 40 | 1992 | |
| D396046 Steer device for an outboard motor | 32 | 1996 | |
| 6,048,454 Oil filter pack and assembly | 62 | 1997 | |
| 5,942,113 Solid-liquid separating filter medium for sewage, waste water, etc | 42 | 1997 | |
| D400890 Automotive manifold | 38 | 1997 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 13, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 13, 2017 |
| 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 |