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Class Information
Number: 521/64
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. > Process of preparing a cellular product by removal of material from a solid polymer-containing matrix without expanding the matrix; composition which is nonexpandible and is designed to form a cellular product by said process; or process of preparing said composition > Removing a liquid to form a cellular product
Description: Subject matter wherein the material removed to form the cellular structure is at least in part a liquid, e.g., extraction, evaporation, etc.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7459488 |
Composition and process for recovery of spilled hydrocarbons from aqueous environments |
Dec. 2, 2008 |
| 7456228 |
Durable foam of olefin polymers, methods of making foam and articles prepared from same |
Nov. 25, 2008 |
| 7446131 |
Porous polymeric matrices made of natural polymers and synthetic polymers and optionally at least one cation and methods of making |
Nov. 4, 2008 |
| 7435761 |
Microporous polyethylene film and method of producing the same |
Oct. 14, 2008 |
| 7432311 |
Process for creating high internal phase polymeric emulsions |
Oct. 7, 2008 |
| 7393878 |
Method for curing high internal phase emulsions |
Jul. 1, 2008 |
| 7384988 |
Method and device for fabricating aerogels and aerogel monoliths obtained thereby |
Jun. 10, 2008 |
| 7361694 |
Durable foam of olefin polymers, methods of making foam and articles prepared from same |
Apr. 22, 2008 |
| 7361693 |
Low density polymer beads |
Apr. 22, 2008 |
| 7341775 |
Composition for forming porous film, porous film and method for forming the same, interlevel insulator film, and semiconductor device |
Mar. 11, 2008 |
| 7323527 |
Process for macroporous acrylic resins |
Jan. 29, 2008 |
| 7319114 |
Hollow polymer particles, method for preparing hollow polymer particles, porous ceramic filter, and method for preparing porous ceramic filter |
Jan. 15, 2008 |
| 7311862 |
Method for manufacturing microporous CMP materials having controlled pore size |
Dec. 25, 2007 |
| 7306754 |
Membrane and the use thereof |
Dec. 11, 2007 |
| 7297722 |
Radially multi-branched polymer and porous film using the same |
Nov. 20, 2007 |
| 7291653 |
Preparation of hydrophobic organic aeorgels |
Nov. 6, 2007 |
| 7285578 |
Water-in-oil emulsion composition for forming silicone elastomer porous material |
Oct. 23, 2007 |
| 7268169 |
Silicone elastomer porous body |
Sep. 11, 2007 |
| 7220821 |
Process for the reduction of the residual monomer content of water-absorbent foam |
May. 22, 2007 |
| 7211607 |
Method for producing high surface area chromia materials for catalysis |
May. 1, 2007 |
| 7211322 |
Lead acid battery separator with improved electrical and mechanical properties |
May. 1, 2007 |
| 7205338 |
Composition for forming porous film, porous film and method for forming the same, interlevel insulator film, and semiconductor device |
Apr. 17, 2007 |
| 7166644 |
Porous polymeric membrane comprising vinylidene fluoride |
Jan. 23, 2007 |
| 7167354 |
Mesoporous carbons and polymers from hydroxylated benzenes |
Jan. 23, 2007 |
| 7163965 |
Process for producing porous composite materials |
Jan. 16, 2007 |
| 7151120 |
Degradable porous materials with high surface areas |
Dec. 19, 2006 |
| 7148264 |
Method of producing macroporous cross-linked polymer particles |
Dec. 12, 2006 |
| 7138436 |
Uncrosslinked foams made from emulsions |
Nov. 21, 2006 |
| 7078441 |
Organic porous material, process for manufacturing the same, and organic porous ion exchanger |
Jul. 18, 2006 |
| 7071241 |
Process for producing porous object |
Jul. 4, 2006 |
| 7053131 |
Absorbent articles comprising supercritical fluid treated HIPE, I-HIPE foams and other foams |
May. 30, 2006 |
| 7022745 |
Process for forming solid pressure sensitive adhesive polymer microspheres |
Apr. 4, 2006 |
| 7008972 |
Golf ball comprising microporous materials and methods for improving printability and interlayer adhesion |
Mar. 7, 2006 |
| 6984671 |
Sinterable structures and method |
Jan. 10, 2006 |
| 6979700 |
Non-degradable porous materials with high surface areas |
Dec. 27, 2005 |
| RE38773 |
High performance biodegradable materials from oriented starch derivatives |
Aug. 9, 2005 |
| 6900249 |
Durable, absorbent latex foam composition having high vertical wicking |
May. 31, 2005 |
| 6897247 |
High internal phase polymeric emulsion composition |
May. 24, 2005 |
| 6890641 |
Low dielectric materials and methods of producing same |
May. 10, 2005 |
| 6890963 |
High internal phase emulsion foams containing polyelectrolytes |
May. 10, 2005 |
| 6887408 |
Porous poly(aryl ether ketone) membranes, processes for their preparation and use thereof |
May. 3, 2005 |
| 6875511 |
Production process for particulate water-absorbent resin |
Apr. 5, 2005 |
| 6866803 |
Mold for use in slip casting method, and method of manufacturing open porous body for use in mold |
Mar. 15, 2005 |
| 6855743 |
Reinforced, laminated, impregnated, and composite-like materials as crosslinked polyvinyl alcohol hydrogel structures |
Feb. 15, 2005 |
| 6849665 |
Absorbent compositions |
Feb. 1, 2005 |
| 6846439 |
Process for producing porous polymer |
Jan. 25, 2005 |
| 6841580 |
Organic porous material, process for manufacturing the same, and organic porous ion exchanger |
Jan. 11, 2005 |
| 6828354 |
Hydrophilic open-cell, elastic foams with a melamine/formaldehyde resin base, production thereof and use thereof in hygiene products |
Dec. 7, 2004 |
| 6822010 |
Method for production of porous material |
Nov. 23, 2004 |
| 6808672 |
Process and apparatus for coagulating and drying latex |
Oct. 26, 2004 |
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