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Class Information
Number: 521/184
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 a -c-c(=x)-x containing reactant wherein x is a chalcogen atom, e.g., phthalic acid, etc. > Nitrogen containing reactant > Nitrogen reactant contains at least two amino nitrogen atoms
Description: Subject matter wherein at least one reactant contains two or more amine groups.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7521485 |
Organic, open cell foam materials, their carbonized derivatives, and methods for producing same |
Apr. 21, 2009 |
| 7132473 |
Composition for forming porous film, porous film and method for forming the same, interlevel insulator film, and semiconductor device |
Nov. 7, 2006 |
| 7074880 |
Polyimide aerogels, carbon aerogels, and metal carbide aerogels and methods of making same |
Jul. 11, 2006 |
| 6814910 |
Aromatic polyimide foam |
Nov. 9, 2004 |
| 6767930 |
Polyhedral oligomeric silsesquioxane polyimide composites |
Jul. 27, 2004 |
| 6576683 |
Aromatic polyimide foam |
Jun. 10, 2003 |
| 6565962 |
Polyimide porous film |
May. 20, 2003 |
| 6506808 |
Microcellular thermoset foams and method for producing the same |
Jan. 14, 2003 |
| 6486285 |
Water-swellable polymer gel and process for preparing the same |
Nov. 26, 2002 |
| 6465536 |
Superabsorbing fibers and films and processes for preparing same |
Oct. 15, 2002 |
| 6399669 |
Porous material and a method for producing the same |
Jun. 4, 2002 |
| 6391932 |
Porous materials |
May. 21, 2002 |
| 6380271 |
Material for electrical insulating organic film, electrical insulating organic film and process for the preparation thereof |
Apr. 30, 2002 |
| 6372808 |
Process for producing porous polyimide and porous polyimide |
Apr. 16, 2002 |
| 6342454 |
Electronic devices with dielectric compositions and method for their manufacture |
Jan. 29, 2002 |
| 6313185 |
Polymers having backbones with reactive groups employed in crosslinking as precursors to nanoporous thin film structures |
Nov. 6, 2001 |
| 6294588 |
Superabsorbing fibers and films and processes for preparing same |
Sep. 25, 2001 |
| 6235803 |
Hollow polymide microspheres |
May. 22, 2001 |
| 6172128 |
Nanoporous polymers crosslinked via cyclic structures |
Jan. 9, 2001 |
| 6156812 |
Nanoporous material fabricated using polymeric template strands |
Dec. 5, 2000 |
| 6140380 |
Blowing agent and method for producing foamed polymers and related compositions |
Oct. 31, 2000 |
| 6084000 |
Hollow polyimide microspheres |
Jul. 4, 2000 |
| 6057379 |
Method of preparing polyimide foam with excellent flexibility properties |
May. 2, 2000 |
| 5998492 |
Super-absorbing polymeric networks |
Dec. 7, 1999 |
| 5998491 |
Super-absorbing polymeric networks |
Dec. 7, 1999 |
| 5997791 |
Superabsorbing fibers and films and processes for preparing same |
Dec. 7, 1999 |
| 5994418 |
Hollow polyimide microspheres |
Nov. 30, 1999 |
| 5968598 |
PPD-T structural composites |
Oct. 19, 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 |
| 5859179 |
Forming superabsorbent polymer |
Jan. 12, 1999 |
| 5847012 |
Microporous polymeric foams and microtextured surfaces |
Dec. 8, 1998 |
| 5847013 |
Superabsorbing polymeric networks |
Dec. 8, 1998 |
| 5837739 |
Loaded syntactic foam-core material |
Nov. 17, 1998 |
| 5824766 |
Polyamideamic acid resin prepolymers, high heat resistant polyamideimide foams prepared therefrom, and processes for preparing them |
Oct. 20, 1998 |
| 5804607 |
Process for making a foamed elastomeric polymer |
Sep. 8, 1998 |
| 5786404 |
Open celled low density foam and method of making such an open celled foam |
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 |
| 5760162 |
Preparation of poly-o-hydroxyamides and poly-o-mercaptoamides |
Jun. 2, 1998 |
| 5739218 |
Radially layered copoly (amidoamine-organosilicon) dendrimers |
Apr. 14, 1998 |
| 5731359 |
Vibration-absorbing elements |
Mar. 24, 1998 |
| 5665787 |
Loaded syntactic foam-core material |
Sep. 9, 1997 |
| 5612384 |
Superabsorbing polymeric networks |
Mar. 18, 1997 |
| 5605937 |
Moldable thermoplastic polymer foam beads |
Feb. 25, 1997 |
| 5589519 |
Process of extruding lightly crosslinked polyolefin foam |
Dec. 31, 1996 |
| 5525644 |
Potted electrical components and methods of making the same |
Jun. 11, 1996 |
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