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Class Information
Number: 521/905
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Hydrophilic or hydrophobic cellular product
Description: Subject matter involving a cellular polymer which has a specific affinity for or aversion to water, i.e., possessing hydrophilic or hydrophobic properties.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7005459 |
Desiccant entrained polymer |
Feb. 28, 2006 |
| 6990913 |
Mulching process |
Jan. 31, 2006 |
| 6582811 |
Method of and material for purification of physical liquids of organism, and method of producing the material |
Jun. 24, 2003 |
| 6486231 |
Co-continuous interconnecting channel morphology composition |
Nov. 26, 2002 |
| 6394212 |
Rotary type construction machine and cab, equipment housing cover and counterweight for such construction machine |
May. 28, 2002 |
| 6316520 |
Monolithic polymer composition having a releasing material |
Nov. 13, 2001 |
| 6194079 |
Monolithic polymer composition having an absorbing material |
Feb. 27, 2001 |
| 6174952 |
Monolithic polymer composition having a water absorption material |
Jan. 16, 2001 |
| 6136424 |
Method of and material for purification of physiological liquids of organism, and method of producing the material |
Oct. 24, 2000 |
| 6130263 |
Desiccant entrained polymer |
Oct. 10, 2000 |
| 6027795 |
Superabsorbent foams and method for producing the same |
Feb. 22, 2000 |
| 6013688 |
PVDF microporous membrane and method |
Jan. 11, 2000 |
| 5985434 |
Absorbent foam |
Nov. 16, 1999 |
| 5981070 |
Water-absorbent agent powders and manufacturing method of the same |
Nov. 9, 1999 |
| 5976434 |
Method for preparing hydrophilic polypropylene membrane |
Nov. 2, 1999 |
| 5968643 |
Microporous film with improved properties |
Oct. 19, 1999 |
| 5942029 |
Mechanically bonded fiber mulch |
Aug. 24, 1999 |
| 5837365 |
Hydrophilic polypropylene membranes |
Nov. 17, 1998 |
| 5780523 |
Foamed pressure sensitive tapes |
Jul. 14, 1998 |
| 5779782 |
Mechanically bonded fiber mulch and process for producing same |
Jul. 14, 1998 |
| 5763682 |
Hydrophilic polyol and process for production thereof |
Jun. 9, 1998 |
| 5719201 |
Superabsorbent hydrophilic isocyanate-based foam and process for production thereof |
Feb. 17, 1998 |
| 5686502 |
Water blown, hydrophilic, open cell polyurethane foams, method of making such foams and articles made therefrom |
Nov. 11, 1997 |
| 5674917 |
Superabsorbent hydrophilic isocyanate-based foam and process for production thereof |
Oct. 7, 1997 |
| 5650450 |
Hydrophilic urethane foam |
Jul. 22, 1997 |
| 5591542 |
Battery diaphragm and battery with such a diaphragm |
Jan. 7, 1997 |
| 5554659 |
Injection molded PVA sponge |
Sep. 10, 1996 |
| 5504163 |
Methylene-bridge aromatic polymer adsorbents with increased hydrophobicity |
Apr. 2, 1996 |
| 5474740 |
Biphasic foam blood mass transfer device |
Dec. 12, 1995 |
| 5389692 |
Structural strength coating and material |
Feb. 14, 1995 |
| 5349040 |
Two-component polyurethane adhesives |
Sep. 20, 1994 |
| 5336695 |
Hydrophilic foams and processes for their manufacture |
Aug. 9, 1994 |
| 5260345 |
Absorbent foam materials for aqueous body fluids and absorbent articles containing such materials |
Nov. 9, 1993 |
| 5244930 |
Biphasic foam blood mass transfer device |
Sep. 14, 1993 |
| 5231116 |
Hydrophilic urethane prepolymer composition |
Jul. 27, 1993 |
| RE34296 |
Process for the preparation of hydrophilic membranes and such membranes |
Jun. 29, 1993 |
| 5207705 |
Prosthesis of foam polyurethane and collagen and uses thereof |
May. 4, 1993 |
| 5171309 |
Polyesters and their use in compostable products such as disposable diapers |
Dec. 15, 1992 |
| 5171308 |
Polyesters and their use in compostable products such as disposable diapers |
Dec. 15, 1992 |
| 5164421 |
Hydrophilic polyurethane foams |
Nov. 17, 1992 |
| 4997858 |
Method for preparing a flexible polyurethane foam |
Mar. 5, 1991 |
| 4985467 |
Highly absorbent polyurethane foam |
Jan. 15, 1991 |
| 4940737 |
Chemically modified hydrophilic prepolymers and polymers |
Jul. 10, 1990 |
| 4912141 |
Fibrous and cartilaginous tissue replacement |
Mar. 27, 1990 |
| 4902511 |
Fibrous and cartilaginous tissue replacement |
Feb. 20, 1990 |
| 4886836 |
Activated medium with low non-specific protein adsorption |
Dec. 12, 1989 |
| 4876289 |
Hydrophilized porous membrane and production process thereof |
Oct. 24, 1989 |
| 4845132 |
Hydrophilic porous membrane, method for production thereof, and plasma separator using said membrane |
Jul. 4, 1989 |
| 4806572 |
Hydrophilic foam pad for makeup removal |
Feb. 21, 1989 |
| 4801621 |
Foam-containing polyurethane(urea) compositions and process for the preparation thereof |
Jan. 31, 1989 |
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