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Class Information
Number: 521/141
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Cellular products or processes of preparing a cellular product, e.g., foams, pores, channels, etc. > Cellular vinyl alcohol polymer
Description: Subject matter involving a cellular polymer derived from vinyl alcohol or process of preparing; composition containing a vinyl alcohol polymer and which composition is capable of forming a cellular product or processes of preparing same; processes of treating a cellular polymer derived from a vinyl alcohol polymer with a material which neither reacts with the cellular polymer to change or modify chemical bonds therein or neither forms a desired composition with the cellular polymer; or products of such a treatment; processes of treating a cellular polymer derived from a vinyl alcohol containing polymer without the addition of a material thereto whereby a physical or chemical change in the polymer may be effected or products which are the result of such treatment.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7427321 |
Foamed fireproofing composition and method |
Sep. 23, 2008 |
| 7265160 |
Crosslinked biodegradable resin continuous foamed sheet and method for production thereof |
Sep. 4, 2007 |
| 7247657 |
Expandable compositions and methods of making and using the compositions |
Jul. 24, 2007 |
| 7244394 |
Methods and kits for assays of analytes of interest in tears |
Jul. 17, 2007 |
| 6953587 |
Process for making a water-soluble foam component |
Oct. 11, 2005 |
| 6943200 |
Water unstable foam compositions |
Sep. 13, 2005 |
| 6855743 |
Reinforced, laminated, impregnated, and composite-like materials as crosslinked polyvinyl alcohol hydrogel structures |
Feb. 15, 2005 |
| 6841580 |
Organic porous material, process for manufacturing the same, and organic porous ion exchanger |
Jan. 11, 2005 |
| 6800668 |
Syntactic deformable foam compositions and methods for making |
Oct. 5, 2004 |
| 6780230 |
Foamed fireproofing composition and method |
Aug. 24, 2004 |
| 6699915 |
Foamed fireproofing composition and method |
Mar. 2, 2004 |
| 6650934 |
Polymeric foam reservoirs for an electrotransport delivery device |
Nov. 18, 2003 |
| 6608117 |
Methods for the preparation of cellular hydrogels |
Aug. 19, 2003 |
| 6461789 |
Polymers, chemical amplification resist compositions and patterning process |
Oct. 8, 2002 |
| 6451348 |
Method of manufacturing porous matrix-type controlled release systems using emulsion technique |
Sep. 17, 2002 |
| 6316510 |
Foamable binder composition and methods for producing the same |
Nov. 13, 2001 |
| 6268405 |
Hydrogels and methods of making and using same |
Jul. 31, 2001 |
| 6214895 |
Method for making a polyvinyl acetal sponge packing for use in the nasal, sinus and otic cavities |
Apr. 10, 2001 |
| 6169123 |
Non-adherent nasal, sinus and otic packing and method for processing sponge materials in fabrication of packings |
Jan. 2, 2001 |
| 6100306 |
Polymeric microbeads and methods of preparation |
Aug. 8, 2000 |
| 6010565 |
Foamed material for fireproofing and/or insulating |
Jan. 4, 2000 |
| 6001911 |
Absorbent resin, absorbent material and method of manufacturing the same |
Dec. 14, 1999 |
| 5962544 |
Microporous materials of ethylene-vinyl alcohol copolymer and methods for making same |
Oct. 5, 1999 |
| 5948829 |
Process for preparing an absorbent foam |
Sep. 7, 1999 |
| 5863957 |
Polymeric microbeads |
Jan. 26, 1999 |
| 5811471 |
Disinfectant plastic sponge material |
Sep. 22, 1998 |
| 5736586 |
Biodegradable foamed plastic materials |
Apr. 7, 1998 |
| 5712319 |
Resin composition for low expansion moldings |
Jan. 27, 1998 |
| 5677360 |
Hydrophilic polymer alloy, fiber and porous membrane comprising this polymer alloy, and methods for preparing them |
Oct. 14, 1997 |
| 5627219 |
Formed plastic and method of manufacturing the same |
May. 6, 1997 |
| 5554659 |
Injection molded PVA sponge |
Sep. 10, 1996 |
| 5554658 |
Injection molded PVA Sponge |
Sep. 10, 1996 |
| 5541234 |
Process for making low density hydrogel materials having high surface areas |
Jul. 30, 1996 |
| 5502082 |
Low density materials having good compression strength and articles formed therefrom |
Mar. 26, 1996 |
| 5500450 |
Ultra-low density microcellular polymer foam and method |
Mar. 19, 1996 |
| 5494940 |
Low density materials having high surface areas and articles formed therefrom |
Feb. 27, 1996 |
| 5461083 |
Formed plastic and method of manufacturing the same |
Oct. 24, 1995 |
| 5437924 |
Compostable, biodegradable foam core board |
Aug. 1, 1995 |
| 5428076 |
Flexible, porous, absorbent, polymeric macrostructures and methods of making the same |
Jun. 27, 1995 |
| 5308879 |
Process for preparing biodegradable resin foam |
May. 3, 1994 |
| RE34296 |
Process for the preparation of hydrophilic membranes and such membranes |
Jun. 29, 1993 |
| 5168104 |
Macroporous particles as biocompatible chromatographic supports |
Dec. 1, 1992 |
| 5147899 |
Process for producing a foamed polyvinyl alcohol film |
Sep. 15, 1992 |
| 5147344 |
Hydrogel foams, and a process for their preparation |
Sep. 15, 1992 |
| 5089535 |
Thermoplastic compositions for water soluble foams |
Feb. 18, 1992 |
| 5047439 |
Expandable powder coating composition, method of coating a substrate with heat-insulating foam and composite material obtained thereby |
Sep. 10, 1991 |
| 4891388 |
Solid gel dispensers for achieving controlled release of volatile liquid materials and method for preparing same |
Jan. 2, 1990 |
| 4891389 |
Solid gel dispensers for achieving controlled release of volatile liquid materials and method for preparing same |
Jan. 2, 1990 |
| 4888364 |
Solid gel dispensers for achieving controlled release of volatile liquid materials and method for preparing same |
Dec. 19, 1989 |
| 4863972 |
Porous cross-linked polyvinyl alcohol particles, process for producing the same, and separating agent composed of the same |
Sep. 5, 1989 |
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