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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:
1 2 3 4

Patent Number Title Of Patent Date Issued
8691883 Aerogel-foam composites Apr. 8, 2014
8629193 Method for producing porous silicon molded bodies Jan. 14, 2014
8603681 Porous film material comprising at least one carbonaceous semimetal oxide phase, and use thereof as a separator material for electrochemical cells Dec. 10, 2013
8569062 Cryogels of PVA-boronic acid containing co-polymers for cell culture Oct. 29, 2013
8563620 High purity silica monoliths and process for the synthesis thereof Oct. 22, 2013
8552076 Fused aerogel-polymer composite, methods of manufacture thereof and articles comprising the same Oct. 8, 2013
8487013 Production method of porous resin particle having hydroxyl group Jul. 16, 2013
8487012 Open celled foams, implants including them and processes for making same Jul. 16, 2013
8420704 Nano-structured polymer composites and process for preparing same Apr. 16, 2013
8389589 Nanoporous media with lamellar structures Mar. 5, 2013
8097274 Skin substitutes, preparation methods and uses thereof Jan. 17, 2012
8080590 Porous polymeric matrices made of natural polymers and synthetic polymers and optionally at least one cation and methods of making Dec. 20, 2011
8076383 Porous resin particle having hydroxy group or primary amino group and production method thereof Dec. 13, 2011
7947752 Method of producing microporous high density polyethylene film May. 24, 2011
7887727 Preparing method of microporous polyolefin film through effective extrusion Feb. 15, 2011
7850942 Porous carbons Dec. 14, 2010
7838567 Foams made from water-absorbing, basic polymers, method for the production and utilization thereof Nov. 23, 2010
7799839 Porous material having hierarchical pore structure and preparation method thereof Sep. 21, 2010
7691911 Polyolefin-based aerogels Apr. 6, 2010
7671100 Gelled biopolymer based foam Mar. 2, 2010
7655210 Porous carbons Feb. 2, 2010
7579385 Dried porous crumbs of hydrogenated block copolymer Aug. 25, 2009
7482389 Nanoporous media with lamellar structures Jan. 27, 2009
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
6355699 Process for manufacturing biomedical foams Mar. 12, 2002
6355730 Permselective membranes and methods for their production 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

1 2 3 4

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