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Class Information
Number: 521/50
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.
Description: Subject matter under Class 520, ... , drawn to cellular products containing at least one solid synthetic polymer or to processes of preparing a cellular product containing at least a solid synthetic polymer.


Sub-classes under this class:

Class Number Class Name Patents
521/151 Cellular polymer derived from tar, pitch, bitumen, asphalt, or plant material of unknown constitution, e.g., nut shell liquor, etc. 21
521/182 Cellular product derived from a -c-c(=x)-x containing reactant wherein x is a chalcogen atom, e.g., phthalic acid, etc. 273
521/155 Cellular product derived from a -n=c=x containing reactant wherein x is a chalcogen atom 548
521/180 Cellular product derived from a phenol, phenol ether, or inorganic phenolate reactant 215
521/178 Cellular product derived from a reactant containing two or more three membered heterocyclic rings wherein two of the ring members are carbon atoms and the remaining ring member is a chalcogen atom 130
521/153 Cellular product derived from aluminum or heavy metal containing reactant 20
521/152 Cellular product derived from boron containing reactant 16
521/142 Cellular product derived from ethylenically unsaturated reactants only 322
521/189 Cellular product derived from reactant containing a carbon to chalcogen bond 298
521/186 Cellular product derived from reactant which is an aldehyde or aldehyde derivative 28
521/154 Cellular product derived from silicon containing reactant 387
521/134 Cellular product derived from two or more solid polymers or from at least one solid polymer and at least one polymer-forming system 718
521/99 Cellular product formation prior to or during solid polymer formation in the presence of a stated ingredient other than water 311
521/141 Cellular vinyl alcohol polymer 79
521/50.5 Compositions to be polymerized by wave energy in order to prepare a cellular product wherein said composition contains a rate-affecting material; or compositions to be modified by wave energy to prepare a cellular product wherein said composition contains a rate-affecting material; or processes of preparing or treating a solid polymer utilizing wave energy in order to prepare a cellular product 116
521/79 Extruding a solid polymer containing material to form a cellular product 732
521/56 Particle which is expandible, process of preparing an expandible particle, or process of expanding a particle to form a cellular product 633
521/77 Preparing a cellular product by decomposition of a solid polymer; or process of forming a composition containing a solid polymer which decomposes so as to subsequently form a cellular polymer, or composition therefrom 139
521/78 Preparing a cellular product by spraying a solid polymer containing material 110
521/76 Preparing a cellular product utilizing a stated ingredient which is surface coated or is a discrete solid particle containing a fluid encapsulated therein, processes of forming an expandible composition, containing said stated ingredient or composition therefrom 113
521/65 Process of forming a cellular product from an aqueous latex, aqueous dispersion, or aqueous emulsion containing a solid polymer; process of preparing a latex, dispersion, or emulsion containing a solid polymer which is designed to be formed into a cellular product, or composition thereof 226
521/82 Process of forming a cellular product subsequent to solid polymer formation in the presence of a stated ingredient, noncellular composition capable of forming a cellular product and containing a stated ingredient, or process of preparing same 285
521/61 Process of preparing a cellular product by removal of material from a solid polymer-containing matrix without expanding the matrix; composition which is nonexpandible and is designed to form a cellular product by said process; or process of preparing said composition 273
521/73 Process of preparing a cellular product of a plastisol of a solid polymer derived solely from ethylenically unsaturated monomers; forming a plastisol of a solid polymer derived solely from an ethylenically unsaturated monomer which is designed to be formed into a cellular product, or composition thereof 65
521/51 Processes of preparing a cellular product having an integral skin 302
521/52 Reticulated cellular product or processes of preparing a reticulated cellular product 93
521/53 Treating a cellular solid polymer by adding a material thereto which reacts with the polymer or forms a composition therewith, or products of said treating process 232


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7625953 Method and plant for the manufacture of polymer particles Dec. 1, 2009
7613491 Silicone based membranes for use in implantable glucose sensors Nov. 3, 2009
7605189 Process for producing a phenolic foam Oct. 20, 2009
7600957 Expandable sealant for fasteners Oct. 13, 2009
7557147 Soft foams made from interpolymers of ethylene/alpha-olefins Jul. 7, 2009
7557167 Polyester compositions, methods of manufacturing said compositions, and articles made therefrom Jul. 7, 2009
7550521 Toughening of thermosets Jun. 23, 2009
7547395 Macroporous gel, its preparation and its use Jun. 16, 2009
7504439 Hydrophobation of melamine foam Mar. 17, 2009
7498385 Polyester compositions, methods of manufacturing said compositions, and articles made therefrom Mar. 3, 2009
7485362 Nanoporous laminates Feb. 3, 2009
7479530 Polymer having charged units Jan. 20, 2009
7462754 Absorbent structure and method for producing the same Dec. 9, 2008
7439276 Froth and durable foam of dispersed olefin polymers, methods of making foam and articles prepared from same Oct. 21, 2008
7390474 Porous material and method for manufacturing same, and electrochemical element made using this porous material Jun. 24, 2008
7338980 Method and apparatus for mixing a high-viscosity material into a gas Mar. 4, 2008
7323540 Process for preparing microrods using liquid-liquid dispersion Jan. 29, 2008
7285576 Absorbent polymer compositions, medical articles, and methods Oct. 23, 2007
7279504 Expandable vinylaromatic polymers and process for their preparation Oct. 9, 2007
7226955 Macrocellular acoustic foam containing particulate additive Jun. 5, 2007
7222380 Tear resistant gels, composites, and cushion articles May. 29, 2007
7220821 Process for the reduction of the residual monomer content of water-absorbent foam May. 22, 2007
7214724 Method for cross-linking a foamable plastic May. 8, 2007
7202385 Process for the alkoxylation of monools in the presence of metallo-organic framework materials Apr. 10, 2007
7182897 Method of storing material into which gas saturates Feb. 27, 2007
7153566 Porous film and process for producing the same Dec. 26, 2006
7153448 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone compositions comprising a hydrofluorocarbon and uses thereof Dec. 26, 2006
7147311 Fluid supply media Dec. 12, 2006
7148263 Hybrid inorganic/organic low k dielectric films with improved mechanical strength Dec. 12, 2006
7141612 Stabilized foams including surface-modified organic molecules Nov. 28, 2006
7112417 Foam composite for the repair or regeneration of tissue Sep. 26, 2006
7094356 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone refrigerant compositions and uses thereof Aug. 22, 2006
7091253 Water-absorbent resin, hydropolymer, process for producing them, and uses of them Aug. 15, 2006
7074343 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone refrigerant compositions comprising a hydrocarbon and uses thereof Jul. 11, 2006
7060736 Blowing agent solubility in polymers Jun. 13, 2006
6949588 Perforated foams Sep. 27, 2005
6946496 Artificial soil Sep. 20, 2005
6933334 Silicone-cork ablative material Aug. 23, 2005
6911522 Filled epsilon-caprolactone based polymer compositions, method for preparing same and articles based on said compositions Jun. 28, 2005
6896823 Pentafluoropropane-based compositions May. 24, 2005
6855744 Gelcasting polymeric precursors for producing net-shaped graphites Feb. 15, 2005
6803495 Polyurethane foam composition and method of manufacture thereof Oct. 12, 2004
6797051 More controllable fibrous patch spray Sep. 28, 2004
6790820 Compositions of hydrofluorocarbons and trans-1,2-dichloroethylene Sep. 14, 2004
6777382 Compositions of hydrofluorocarbons and methanol Aug. 17, 2004
6759080 Process for making foams by photopolymerization of emulsions Jul. 6, 2004
6756428 Degradable plastics possessing a microbe-inhibiting quality Jun. 29, 2004
6739344 Biodegradable cellulose acetate structure and tobacco filter May. 25, 2004
6719923 Paste, which can undergo screen printing for producing a porous polymer membrane for a biosensor Apr. 13, 2004
6670404 Polymeric foam powder processing techniques, foam powders products, and foams produced containing those foam powders Dec. 30, 2003

1 2 3 4 5


 
 
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