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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:
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Patent Number Title Of Patent Date Issued
8691883 Aerogel-foam composites Apr. 8, 2014
8664286 Vibration damping composition Mar. 4, 2014
8575296 Polyester articles having simulated metallic or pearlescent appearance Nov. 5, 2013
8557885 Extruded thermoplastic resin foam Oct. 15, 2013
8497316 Crosslinkable and foaming polyester-polyurethane (hybrid) resin moulding compositions, with foaming characteristics for closed mould applications Jul. 30, 2013
8314160 Thermoplastic resin foam Nov. 20, 2012
8288447 Foamable compositions based on epoxy resins and polyesters Oct. 16, 2012
8217092 Multicomponent polyurethane/vinyl ester hybrid foam system and its use Jul. 10, 2012
8217093 Two-component polyurethane / vinyl ester hybrid foam system and its use as a flame retardant material and material for filling openings in buildings with foam Jul. 10, 2012
8080590 Porous polymeric matrices made of natural polymers and synthetic polymers and optionally at least one cation and methods of making Dec. 20, 2011
8067477 Resin composition for electrophotographic toners and electrophotographic toners Nov. 29, 2011
8017664 Process for preparing polymer polyols Sep. 13, 2011
7960443 Extruded styrenic resin foam and method for producing the same Jun. 14, 2011
7939574 Foamed isocyanate-based polymer having improved hardness properties and process for production thereof May. 10, 2011
7919539 Concentrate of polyfunctional compounds usable for the preparation of foamed polyester materials Apr. 5, 2011
7838567 Foams made from water-absorbing, basic polymers, method for the production and utilization thereof Nov. 23, 2010
7759403 Flexible polyurethane foam, process for its production, and seat for automobile using the flexible polyurethane foam Jul. 20, 2010
7655705 Open-cell foam composed of high-melting point plastics Feb. 2, 2010
7638560 Thermoplastic and polymer foams and method of preparation thereof Dec. 29, 2009
7635724 Flexible polyurethane foam, process for its production, and seat for automobile using the flexible polyurethane foam Dec. 22, 2009
7488535 Absorbent cores for absorbent diapers having reduced thickness and improved liquid handling and retention performance and comprising a super absorbent polymer Feb. 10, 2009
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
6596389 Foamed composite panel with improved acoustics and durability Jul. 22, 2003
6596784 Strengthened thermoplastic for window coverings 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

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