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Class Information
Number: 521/189
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 product derived from reactant containing a carbon to chalcogen bond
Description: Subject matter involving a cellular polymer derived from at least one reactant having chalcogen (i.e., oxygen, sulphur, selenium, or tellurium) bonded directly to carbon or processes of preparing a composition containing a polymer derived from such a reactant or involving a polymerizable reactant having chalcogen bonded directly to carbon and which composition is capable of forming a cellular product or process of preparing same; processes of treating a cellular polymer derived from such a reactant with a material which neither reacts with the cellular polymer to change or modify chemical bonds therein nor forms a desired composition with the cellular polymer or products thereof; processes of treating a cellular polymer without the addition of a material whereby a physical or chemical change in the polymer may be effected or products which are the result of such a treatment.










Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8637583 Fiber or foil from polymers with high T.sub.g and process for their manufacture Jan. 28, 2014
8633257 Bio-based foam from natural oils Jan. 21, 2014
8604092 Polymeric complex supporter for controlling oxygen-releasing substances and method for manufacturing the same Dec. 10, 2013
8591855 Porous carbons Nov. 26, 2013
8586643 Composition containing polyhydroxyalkanoate copolymer and polylactic acid used for preparing foaming material Nov. 19, 2013
8436060 Organic aerogel and composition for the organic aerogel May. 7, 2013
8399531 Foamable composition Mar. 19, 2013
8324286 Heat-expandable microspheres, method for producing the same, and application thereof Dec. 4, 2012
8303922 Method for exfoliation of hexagonal boron nitride Nov. 6, 2012
8283389 Methods of manufacture of polylactic acid foams Oct. 9, 2012
8277719 Process for the preparation of auxetic foams Oct. 2, 2012
8273817 Claylinked polymer gels in new physical forms, methods for their formation and uses thereof Sep. 25, 2012
8268901 Coated particulate expandable polylactic acid Sep. 18, 2012
8252886 Resin composition for sheet products Aug. 28, 2012
8227518 Porous carbons Jul. 24, 2012
8193255 Porous infusible polymer parts Jun. 5, 2012
8097274 Skin substitutes, preparation methods and uses thereof Jan. 17, 2012
8076382 Porous polymeric materials for hydrogen storage Dec. 13, 2011
8067475 Adhesive sheet comprising hollow parts and method for preparing the same Nov. 29, 2011
8026292 Cyanate-based, carbon-dioxide-filled structured foams and method for their production Sep. 27, 2011
8008362 Nanoporous polymer foams of polycondensation reactive resins Aug. 30, 2011
7994231 Polyamide foams, process to make them and applications thereof Aug. 9, 2011
7985423 Porous bodies and method of production thereof Jul. 26, 2011
7919540 Rigid, low density foam Apr. 5, 2011
7879922 Rigid, closed-cell, graft-polymer foam; rigid flexible cellular foam; rigid flexible cellular foam mixtures; and method for manufacturing a rigid, closed-cell, graft-polymer foam Feb. 1, 2011
7842736 Porous carbons Nov. 30, 2010
7745504 Process for producing porous spherical polyamide particle Jun. 29, 2010
7645810 Foamed sheet of polylactic acid resin, foam molding of polylactic acid resin and method of preparing foam molding Jan. 12, 2010
7582721 Two step preparation of random polyoxadiazole copolymer and articles resulting therefrom Sep. 1, 2009
7423070 Surface-modified base matrices Sep. 9, 2008
7368502 Hydroxyphenyl cross-linked macromolecular network and applications thereof May. 6, 2008
7282466 Sulfur-functionalized carbon nanoarchitectures as porous, high-surface-area supports for precious metal catalysts Oct. 16, 2007
7173070 Foam cushion and method of making and using the same Feb. 6, 2007
7148264 Method of producing macroporous cross-linked polymer particles Dec. 12, 2006
6924322 Thio-,amine-,nitro-,and macrocyclic containing organic aerogels & xerogels Aug. 2, 2005
6818676 Foam cushion and method of making and using the same Nov. 16, 2004
6814910 Aromatic polyimide foam Nov. 9, 2004
6797738 Open pore biodegradable matrices Sep. 28, 2004
6576683 Aromatic polyimide foam Jun. 10, 2003
6511650 Preparing porous hydrogel products Jan. 28, 2003
6486285 Water-swellable polymer gel and process for preparing the same Nov. 26, 2002
6399669 Porous material and a method for producing the same Jun. 4, 2002
6391932 Porous materials May. 21, 2002
6372808 Process for producing porous polyimide and porous polyimide Apr. 16, 2002
6369172 Process for using nitric acid to oxidize polyarylene sulfide to polyarylene sulfoxide Apr. 9, 2002
6294588 Superabsorbing fibers and films and processes for preparing same Sep. 25, 2001
6281256 Open pore biodegradable matrices Aug. 28, 2001
6194478 Document feeding component and method of manufacture thereof Feb. 27, 2001
6133330 Aromatic polyimide foam Oct. 17, 2000
6087411 Document feeding component and method of manufacture thereof Jul. 11, 2000

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