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Class Information
Number: 521/159
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 -n=c=x containing reactant wherein x is a chalcogen atom > N=c=x reactant having at least two c-nh-c(=x)- groups, e.g., prepolymers, etc.
Description: Subject matter wherein the -N=C=X (X is chalcogen) reactant contains at least two C-NH groups.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7414080 |
Polyurethane polishing pad |
Aug. 19, 2008 |
| 7393879 |
High resilient silicone foam and process for preparing same |
Jul. 1, 2008 |
| 7378454 |
Polyurethane composition and polishing pad |
May. 27, 2008 |
| 7339020 |
High-functionality polyisocyanates |
Mar. 4, 2008 |
| 7307136 |
Polyurethane elastomers |
Dec. 11, 2007 |
| 7238730 |
Viscoelastic polyurethane foam |
Jul. 3, 2007 |
| 7223801 |
Joint fill composition and method |
May. 29, 2007 |
| 7208531 |
Viscoelastic polyurethane foam |
Apr. 24, 2007 |
| 7205374 |
Two-part polyurethane adhesive for bonding insulation boards to a roof deck |
Apr. 17, 2007 |
| 7179882 |
Low viscosity polymer polyols |
Feb. 20, 2007 |
| 7148264 |
Method of producing macroporous cross-linked polymer particles |
Dec. 12, 2006 |
| 7098255 |
Process for producing polyurethane foam |
Aug. 29, 2006 |
| 7078443 |
Viscoelastic foam layer and composition |
Jul. 18, 2006 |
| 6919384 |
Process for preparing a flexible polyurethane foam |
Jul. 19, 2005 |
| 6894083 |
Polyurethane foam composition |
May. 17, 2005 |
| 6884507 |
Use of high modulus, impact resistant foams for structural components |
Apr. 26, 2005 |
| 6884824 |
Process for preparing an elastomer |
Apr. 26, 2005 |
| 6858699 |
Polyurethane elastomers and processes for their preparation and use |
Feb. 22, 2005 |
| 6852763 |
Polyurethane foam compound for ink holder, ink holder, and method for ensuring close contact for ink holder |
Feb. 8, 2005 |
| 6849666 |
Polyurethanes containing dispersed crystalline polyesters |
Feb. 1, 2005 |
| 6849675 |
Golf ball comprising a plasticized polyurethane |
Feb. 1, 2005 |
| 6833390 |
Process for preparing closed-cell water-blown rigid polyurethane foams having improved mechanical properties |
Dec. 21, 2004 |
| 6818674 |
Elastic member and image formation equipment |
Nov. 16, 2004 |
| 6803390 |
Rigid polyurethane foams |
Oct. 12, 2004 |
| 6800715 |
Lightweight tire support and composition and method for making a tire support |
Oct. 5, 2004 |
| 6790872 |
Mechanically frothed and chemically blown polyurethane foam |
Sep. 14, 2004 |
| 6784219 |
Polyurethane cast elastomers based on durene diisocyanate |
Aug. 31, 2004 |
| 6784217 |
Process for making high resilience foams |
Aug. 31, 2004 |
| 6777455 |
Process for producing polyurethane foam |
Aug. 17, 2004 |
| 6750265 |
Prepolymer compostion for insulating foams |
Jun. 15, 2004 |
| 6737471 |
Polyurethane elastomers which exhibit improved stability to hydrolysis |
May. 18, 2004 |
| 6734217 |
Flame resistant HR cold-moulded foam with a reduced fume density and toxicity |
May. 11, 2004 |
| 6706775 |
Polyurethane foam products with controlled release of agents and additives |
Mar. 16, 2004 |
| 6653361 |
Flame retardant polyurethane composition and method of manufacture thereof |
Nov. 25, 2003 |
| 6649726 |
Two-component type polyurethane composition and process of preparing the same |
Nov. 18, 2003 |
| 6638989 |
Method of preparing polyurethane-modified polyisocyanurate foam |
Oct. 28, 2003 |
| 6638990 |
Flame-laminable polyurethane foams |
Oct. 28, 2003 |
| 6638986 |
Preparation of in situ-reticulated flexible polyurethane foams |
Oct. 28, 2003 |
| 6635737 |
Polymers derived from low unsaturation polyamines |
Oct. 21, 2003 |
| 6632851 |
Flame-laminable polyurethane foams |
Oct. 14, 2003 |
| 6627671 |
Methods for making urethane molded products for polishing pads |
Sep. 30, 2003 |
| 6617368 |
Isotropic rigid foams |
Sep. 9, 2003 |
| 6613865 |
Thermoplastic desiccant |
Sep. 2, 2003 |
| 6610756 |
Inorganic/organic composite foam and process for producing the same |
Aug. 26, 2003 |
| 6608160 |
Composition for production of cover packing and process for production of cover packing using the same |
Aug. 19, 2003 |
| 6593387 |
Process for making high resilience foams |
Jul. 15, 2003 |
| 6586487 |
Low-density, water blown polyurethane foams for energy-absorbing applications |
Jul. 1, 2003 |
| 6586486 |
Preparation of low-density hydrophilic flexible polyurethane foams |
Jul. 1, 2003 |
| 6583192 |
Preparation of flexible polyurethane foams |
Jun. 24, 2003 |
| 6572791 |
Electroconductive elastic member, elastic member and image formation equipment |
Jun. 3, 2003 |
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