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Class Information
Number: 521/137
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 two or more solid polymers or from at least one solid polymer and at least one polymer-forming system > At least one polymer is derived from a -n=c=x reactant wherein x is a chalcogen atom or wherein the polymer-forming system contains the same type of reactant
Description: Subject matter wherein at least one of the polymers is derived from a -N=C=X reactant and wherein X is a chalcogen atom.
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 |
| 7390867 |
Isocyanate adducts |
Jun. 24, 2008 |
| 7388036 |
Flexible polyurethane foam, process for its production, and seat for automobile employing it |
Jun. 17, 2008 |
| 7378454 |
Polyurethane composition and polishing pad |
May. 27, 2008 |
| 7326738 |
Composition and process for forming a flexible polyurethane foam sealing device |
Feb. 5, 2008 |
| 7273894 |
Compositions for the preparation of void-containing articles |
Sep. 25, 2007 |
| 7230036 |
Foam insulation made with expandable microspheres and methods |
Jun. 12, 2007 |
| 7202284 |
Foamed thermoplastic polyurethanes |
Apr. 10, 2007 |
| 7179882 |
Low viscosity polymer polyols |
Feb. 20, 2007 |
| 7179845 |
Elastomeric latex foams |
Feb. 20, 2007 |
| 7169824 |
Process for preparing a flexible polyurethane foam |
Jan. 30, 2007 |
| 7160975 |
Methacrylates as stabilizers for polymer polyols |
Jan. 9, 2007 |
| 7138437 |
Polyurethane composition containing a property-enhancing agent |
Nov. 21, 2006 |
| 7115673 |
Photosensitive resin composition, porous resin, circuit board, and wireless suspension board |
Oct. 3, 2006 |
| 7098255 |
Process for producing polyurethane foam |
Aug. 29, 2006 |
| 7091341 |
Catalyst and a method for the trimerization of isocyanates |
Aug. 15, 2006 |
| 7005458 |
Static dissipative polyurethane foams |
Feb. 28, 2006 |
| 6960619 |
Foamable photo-polymerized composition |
Nov. 1, 2005 |
| 6919384 |
Process for preparing a flexible polyurethane foam |
Jul. 19, 2005 |
| 6908951 |
Expandable coating composition, coated product, and production method for expanded coating film |
Jun. 21, 2005 |
| 6887913 |
Method for producing a rigid foamed synthetic resin |
May. 3, 2005 |
| 6884825 |
Process for making a flexible polyurethane foam |
Apr. 26, 2005 |
| 6884507 |
Use of high modulus, impact resistant foams for structural components |
Apr. 26, 2005 |
| 6881763 |
Plastic material |
Apr. 19, 2005 |
| 6867239 |
Plastic material |
Mar. 15, 2005 |
| 6864296 |
Plastic material |
Mar. 8, 2005 |
| 6855742 |
Agents for reducing the force-to-crush (FTC) of high support flexible foams |
Feb. 15, 2005 |
| 6852763 |
Polyurethane foam compound for ink holder, ink holder, and method for ensuring close contact for ink holder |
Feb. 8, 2005 |
| 6846849 |
Saccharide-based resin for the preparation of foam |
Jan. 25, 2005 |
| 6833390 |
Process for preparing closed-cell water-blown rigid polyurethane foams having improved mechanical properties |
Dec. 21, 2004 |
| 6831112 |
Polyether, active-hydrogen ingredient, resin-forming composition, and process for producing foam |
Dec. 14, 2004 |
| 6822011 |
Water-blown foams of low apparent density |
Nov. 23, 2004 |
| 6822042 |
Saccharide-based resin for the preparation of composite products |
Nov. 23, 2004 |
| 6803390 |
Rigid polyurethane foams |
Oct. 12, 2004 |
| 6790870 |
Methods of making foamed materials of blended thermoplastic polymers using carbon dioxide |
Sep. 14, 2004 |
| 6784217 |
Process for making high resilience foams |
Aug. 31, 2004 |
| 6777457 |
Isocyanate-based polymer foam and process for production thereof |
Aug. 17, 2004 |
| 6777455 |
Process for producing polyurethane foam |
Aug. 17, 2004 |
| 6774153 |
Process for preparing a free rise or slabstock flexible polyurethane foam |
Aug. 10, 2004 |
| 6759443 |
Polyurethane foam composition and additive useful in shoe sole applications and methods of making same |
Jul. 6, 2004 |
| 6759363 |
Activators for the production of polyurethane foams |
Jul. 6, 2004 |
| 6756414 |
Polymer polyol composition, process for producing the same, and process for producing polyurethane resin |
Jun. 29, 2004 |
| 6750265 |
Prepolymer compostion for insulating foams |
Jun. 15, 2004 |
| 6747068 |
Hydrophobic polyurethane foam |
Jun. 8, 2004 |
| 6740687 |
Latex replacement polyurethane foams with improved flame retardancy |
May. 25, 2004 |
| 6734220 |
Fine cell, high density viscoelastic polyurethane foams |
May. 11, 2004 |
| 6734219 |
Flexible polyurethane foam and method for its production |
May. 11, 2004 |
| 6734217 |
Flame resistant HR cold-moulded foam with a reduced fume density and toxicity |
May. 11, 2004 |
| 6727290 |
Process of making rigid polyurethane foam |
Apr. 27, 2004 |
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