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Class Information
Number: 521/62
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 > Mixture of solid polymers present during cell formation
Description: Subject matter wherein two or more polymers are present during the cell-forming operation.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 7268169 |
Silicone elastomer porous body |
Sep. 11, 2007 |
| 7211322 |
Lead acid battery separator with improved electrical and mechanical properties |
May. 1, 2007 |
| 7115673 |
Photosensitive resin composition, porous resin, circuit board, and wireless suspension board |
Oct. 3, 2006 |
| 7056455 |
Process for the preparation of nanostructured materials |
Jun. 6, 2006 |
| 6897247 |
High internal phase polymeric emulsion composition |
May. 24, 2005 |
| 6872761 |
Compositions for acoustic-damping coatings |
Mar. 29, 2005 |
| 6818673 |
Method for producing silicone foam utilizing a mechanical foaming agent |
Nov. 16, 2004 |
| 6787580 |
Water-free preparation process for multimodal thermoplastic polymer foam and foam therefrom |
Sep. 7, 2004 |
| 6777454 |
Vesiculated polyester granules |
Aug. 17, 2004 |
| 6710130 |
Propylene polymer composition and its foam moldings |
Mar. 23, 2004 |
| 6630519 |
Process for producing porous polymer |
Oct. 7, 2003 |
| 6562449 |
Nanoporous low dielectric constant polymers with hollow polymer particles |
May. 13, 2003 |
| 6472443 |
Porous polymer media |
Oct. 29, 2002 |
| 6465532 |
Co-continuous interconnecting channel morphology polymer having controlled gas transmission rate through the polymer |
Oct. 15, 2002 |
| 6395793 |
Method for production of porous material |
May. 28, 2002 |
| 6387969 |
Porous article and process for producing porous article |
May. 14, 2002 |
| 6372808 |
Process for producing porous polyimide and porous polyimide |
Apr. 16, 2002 |
| 6355730 |
Permselective membranes and methods for their production |
Mar. 12, 2002 |
| 6355699 |
Process for manufacturing biomedical foams |
Mar. 12, 2002 |
| 6162838 |
Porous insulating compounds and method for making same |
Dec. 19, 2000 |
| 6147131 |
High internal phase emulsions (HIPEs) and foams made therefrom |
Nov. 14, 2000 |
| 6136873 |
Water-absorbing, expanded, crosslinked polymers, the production and use thereof |
Oct. 24, 2000 |
| 6107356 |
High suction polymeric foam materials |
Aug. 22, 2000 |
| 6100306 |
Polymeric microbeads and methods of preparation |
Aug. 8, 2000 |
| 6080796 |
Dissolving insecticide in monomer |
Jun. 27, 2000 |
| 6057376 |
Process to prepare low density porous crosslinked polymeric materials |
May. 2, 2000 |
| 6040494 |
Foam material its manufacturing method and use and an absorbent disposable article comprising such a foam material |
Mar. 21, 2000 |
| 6017971 |
Resin composition to be plated |
Jan. 25, 2000 |
| 6013589 |
Absorbent materials for distributing aqueous liquids |
Jan. 11, 2000 |
| 6011075 |
Enhancing gel strength |
Jan. 4, 2000 |
| 5998493 |
Hydrophilic/oleophilic microcellular foam and method for making same |
Dec. 7, 1999 |
| 5994419 |
Preparation of rapidly dissolving/absorbing powders of hydrophilic/super absorbent (CO)polymers |
Nov. 30, 1999 |
| 5990184 |
Polyisocyanate based aerogel |
Nov. 23, 1999 |
| 5990182 |
Polymer packing material for liquid chromatography and a producing method thereof |
Nov. 23, 1999 |
| 5989467 |
Ceramic foam precursor resin composition |
Nov. 23, 1999 |
| 5977194 |
High internal phase emusions and porous materials prepared therefrom |
Nov. 2, 1999 |
| 5948557 |
Very thin microporous material |
Sep. 7, 1999 |
| 5912276 |
Process to prepare low density porous cross-linked polymeric materials |
Jun. 15, 1999 |
| 5902834 |
Method of manufacturing particles, and particles that can be produced in accordance with the method |
May. 11, 1999 |
| 5900437 |
Hydrophilic/oleophilic microcellular foam and method for making same |
May. 4, 1999 |
| 5869171 |
Heterogeneous foam materials |
Feb. 9, 1999 |
| 5863957 |
Polymeric microbeads |
Jan. 26, 1999 |
| 5849805 |
Process for making foams useful as absorbent members for catamenial pads |
Dec. 15, 1998 |
| 5800861 |
High solid infrared absorbing compositions |
Sep. 1, 1998 |
| 5795921 |
Foams made for high internal phase emulsions useful as absorbent members for catamenial pads |
Aug. 18, 1998 |
| 5786395 |
Absorbent foams made from high internal phase emulsions useful for acquiring and distributing aqueous fluids |
Jul. 28, 1998 |
| 5773536 |
Resin composition to be plated |
Jun. 30, 1998 |
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