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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 6084000 |
Hollow polyimide microspheres |
Jul. 4, 2000 |
| 6057379 |
Method of preparing polyimide foam with excellent flexibility properties |
May. 2, 2000 |
| 6031069 |
Triblock terpolymer, its use in medical products and process for its production |
Feb. 29, 2000 |
| 5997791 |
Superabsorbing fibers and films and processes for preparing same |
Dec. 7, 1999 |
| 5993952 |
Document feeding component and method of manufacture thereof |
Nov. 30, 1999 |
| 5994418 |
Hollow polyimide microspheres |
Nov. 30, 1999 |
| 5994423 |
Urine absorber, method for producing it, urine absorbing method utilizing it and portable toilet |
Nov. 30, 1999 |
| 5958989 |
Highly asymmetric ultrafiltration membranes |
Sep. 28, 1999 |
| 5919833 |
Open celled foam and method of making an open celled foam |
Jul. 6, 1999 |
| 5900440 |
Open celled low density foam and method of making such an open celled foam |
May. 4, 1999 |
| 5898040 |
Microporous polymeric foams and microtextured surfaces |
Apr. 27, 1999 |
| 5889072 |
Process for preparing superabsorbing crosslinked polyaspartate salt |
Mar. 30, 1999 |
| 5886059 |
Highly asymmetric polyethersulfone filtration membranes |
Mar. 23, 1999 |
| 5824766 |
Polyamideamic acid resin prepolymers, high heat resistant polyamideimide foams prepared therefrom, and processes for preparing them |
Oct. 20, 1998 |
| 5789452 |
Polyarylene sulfide foams and a process for their production |
Aug. 4, 1998 |
| 5786404 |
Open celled low density foam and method of making such an open celled foam |
Jul. 28, 1998 |
| 5786397 |
Foamable molding compositions |
Jul. 28, 1998 |
| 5776990 |
Foamed polymer for use as dielectric material |
Jul. 7, 1998 |
| 5770636 |
Open celled foam and method of making an open celled foam |
Jun. 23, 1998 |
| 5763498 |
Moldable thermoplastic polymer foam beads |
Jun. 9, 1998 |
| 5725872 |
Composition for foams, notably rectal foams, and foams thus obtained |
Mar. 10, 1998 |
| 5716999 |
Polyarylene sulfide foams and a process for their production |
Feb. 10, 1998 |
| 5710192 |
Polydiene diols in resilient polyurethane foams |
Jan. 20, 1998 |
| 5708040 |
Method for preparing porous membranes utilizing water or organic vapor adsorption |
Jan. 13, 1998 |
| 5708041 |
Foamable molding compositions |
Jan. 13, 1998 |
| 5703147 |
Extrudable microporous insulation |
Dec. 30, 1997 |
| 5688837 |
Method of improving adhesion of polyurethane foam to polycarbonate and articles made thereby |
Nov. 18, 1997 |
| 5652276 |
Foaming resin composition, plastic foam formed from the composition, and method for forming the plastic foam |
Jul. 29, 1997 |
| 5618855 |
Biodegradable copolymers and plastic articles comprising biodegradable copolymers |
Apr. 8, 1997 |
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