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Class Information
Number: 521/138
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 polycarboxylic acid or derivative and a polyol or wherein the polymer-forming system containing the same type of reactants
Description: Subject matter wherein at least one of the polymers is the reaction product of a polycarboxylic acid or derivative and a polyol.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7446131 |
Porous polymeric matrices made of natural polymers and synthetic polymers and optionally at least one cation and methods of making |
Nov. 4, 2008 |
| 7439297 |
Foamable fluoropolymers compositions without using foaming agents |
Oct. 21, 2008 |
| 7423070 |
Surface-modified base matrices |
Sep. 9, 2008 |
| 7388036 |
Flexible polyurethane foam, process for its production, and seat for automobile employing it |
Jun. 17, 2008 |
| 7368483 |
Porous composition of matter, and method of making same |
May. 6, 2008 |
| 7273894 |
Compositions for the preparation of void-containing articles |
Sep. 25, 2007 |
| 7271202 |
Reactive hot melt adhesive |
Sep. 18, 2007 |
| 7179882 |
Low viscosity polymer polyols |
Feb. 20, 2007 |
| 7175910 |
Absorbent cores for absorbent diapers having reduced thickness and improved liquid handling and retention performance and comprising a super absorbent polymer |
Feb. 13, 2007 |
| 7115673 |
Photosensitive resin composition, porous resin, circuit board, and wireless suspension board |
Oct. 3, 2006 |
| 6833094 |
Dimensionally stable parts having good torsional stability and compositions and methods for making same |
Dec. 21, 2004 |
| 6812264 |
Foamable polyester resin composition |
Nov. 2, 2004 |
| 6800668 |
Syntactic deformable foam compositions and methods for making |
Oct. 5, 2004 |
| 6790870 |
Methods of making foamed materials of blended thermoplastic polymers using carbon dioxide |
Sep. 14, 2004 |
| 6787580 |
Water-free preparation process for multimodal thermoplastic polymer foam and foam therefrom |
Sep. 7, 2004 |
| 6777454 |
Vesiculated polyester granules |
Aug. 17, 2004 |
| 6766571 |
Adhesive composition comprising thermoplastic polyester and trapped gas bubbles |
Jul. 27, 2004 |
| 6642282 |
Porous para-oriented aromatic polyamide film, prepreg thereof, and base substrate for printed circuit board |
Nov. 4, 2003 |
| 6630167 |
Hyaluronic acid anti-adhesion barrier |
Oct. 7, 2003 |
| 6596784 |
Strengthened thermoplastic for window coverings |
Jul. 22, 2003 |
| 6596389 |
Foamed composite panel with improved acoustics and durability |
Jul. 22, 2003 |
| 6583189 |
Strengthened thermoplastic |
Jun. 24, 2003 |
| 6543573 |
Speaker unit, speaker system, and speaker diaphragm manufacturing method |
Apr. 8, 2003 |
| 6458858 |
Biodegradable polyester material particles |
Oct. 1, 2002 |
| 6414045 |
One-component polyurethane compositions with improved curing |
Jul. 2, 2002 |
| 6355699 |
Process for manufacturing biomedical foams |
Mar. 12, 2002 |
| 6339109 |
Method of pelletization of polymer |
Jan. 15, 2002 |
| 6323251 |
Thermoplastic/thermoset hybrid foams and methods for making same |
Nov. 27, 2001 |
| 6313185 |
Polymers having backbones with reactive groups employed in crosslinking as precursors to nanoporous thin film structures |
Nov. 6, 2001 |
| 6306921 |
Foamed beads of polyester resin |
Oct. 23, 2001 |
| 6300386 |
Expandable synthetic resin composition, synthetic resin foams, and methods for manufacturing synthetic resin foams |
Oct. 9, 2001 |
| 6258924 |
Biodegradable polymers, the preparation thereof, and the use thereof for producing biodegradable moldings |
Jul. 10, 2001 |
| 6214897 |
Compositions of polycondensed branched polyester polymers and aromatic polycarbonates, and the closed cell polymer foams made therefrom |
Apr. 10, 2001 |
| 6201034 |
Biodegradable polymers, the production thereof and the use thereof for producing biodegradable moldings |
Mar. 13, 2001 |
| 6187830 |
Process for the preparation of foamed articles |
Feb. 13, 2001 |
| 6184261 |
Water-resistant degradable foam and method of making the same |
Feb. 6, 2001 |
| 6172128 |
Nanoporous polymers crosslinked via cyclic structures |
Jan. 9, 2001 |
| 6156812 |
Nanoporous material fabricated using polymeric template strands |
Dec. 5, 2000 |
| 6121335 |
Nucleator for foaming, foamable composition, foam and production method of foam |
Sep. 19, 2000 |
| 6113822 |
Polyolefins as nucleating agent for foamed engineering polymers |
Sep. 5, 2000 |
| 6107357 |
Dielectric compositions and method for their manufacture |
Aug. 22, 2000 |
| 6099950 |
Absorbent materials having improved absorbent property and methods for making the same |
Aug. 8, 2000 |
| 6100307 |
Compositions of polycondensed branched polyester polymers and aromatic polycarbonates, and the closed cell polymer foams made therefrom |
Aug. 8, 2000 |
| 6054500 |
Flexible polyester foams |
Apr. 25, 2000 |
| 6051621 |
High temperature syndiotactic styrene polymer foam |
Apr. 18, 2000 |
| 6046248 |
Biodegradable polymers, the preparation thereof and the use thereof for producing biodegradable moldings |
Apr. 4, 2000 |
| 6046249 |
Dimensional stabilizing, cell opening additives for polyurethane flexible and rigid foams |
Apr. 4, 2000 |
| 6028019 |
Water vapor permeable and waterproof polyester membrane pigmented with carbon particles |
Feb. 22, 2000 |
| 6025405 |
Compositions of polycondensed branched polyester polymers and aromatic polycarbonates, and the closed cell polymer foams made therefrom |
Feb. 15, 2000 |
| 6020387 |
Low density polymers and methods of making and using same |
Feb. 1, 2000 |
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