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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
521/134 Cellular product derived from two or more solid polymers or from at least one solid polymer and at least one polymer-forming system 792
521/141 Cellular vinyl alcohol polymer 84
521/142 Cellular product derived from ethylenically unsaturated reactants only 400
521/151 Cellular polymer derived from tar, pitch, bitumen, asphalt, or plant material of unknown constitution, e.g., nut shell liquor, etc. 25
521/152 Cellular product derived from boron containing reactant 18
521/153 Cellular product derived from aluminum or heavy metal containing reactant 27
521/154 Cellular product derived from silicon containing reactant 430
521/155 Cellular product derived from a -n=c=x containing reactant wherein x is a chalcogen atom 602
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 142
521/180 Cellular product derived from a phenol, phenol ether, or inorganic phenolate reactant 231
521/182 Cellular product derived from a -c-c(=x)-x containing reactant wherein x is a chalcogen atom, e.g., phthalic acid, etc. 295
521/186 Cellular product derived from reactant which is an aldehyde or aldehyde derivative 38
521/189 Cellular product derived from reactant containing a carbon to chalcogen bond 326
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 126
521/51 Processes of preparing a cellular product having an integral skin 311
521/52 Reticulated cellular product or processes of preparing a reticulated cellular product 100
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 249
521/56 Particle which is expandible, process of preparing an expandible particle, or process of expanding a particle to form a cellular product 702
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 339
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 257
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 71
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 135
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 159
521/78 Preparing a cellular product by spraying a solid polymer containing material 118
521/79 Extruding a solid polymer containing material to form a cellular product 789
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 339
521/99 Cellular product formation prior to or during solid polymer formation in the presence of a stated ingredient other than water 348


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8691882 Organic-inorganic hybrid scaffolds with surface-immobilized nano-hydroxyapatite and preparation method thereof Apr. 8, 2014
8629192 Method for the production of high internal phase emulsion foams using ultraviolet light Jan. 14, 2014
8623930 Thermoplastic resin foam, method of producing the same, and light reflecting material thereof Jan. 7, 2014
8623932 Foamed polyolefin composition Jan. 7, 2014
8618188 Bone cement with adapted mechanical properties Dec. 31, 2013
8609740 Closed-loop recycled polyurethane foam, methods of manufacture and products therefrom Dec. 17, 2013
8604091 Non-isocyanate spray foam Dec. 10, 2013
8569391 Ordered porous mesostructured materials from nanoparticle-block copolymer self-assembly Oct. 29, 2013
8546455 Expanded polystyrene solubilization method Oct. 1, 2013
8536240 Expandable polystyrene composition Sep. 17, 2013
8519015 Nanothin polymer films with selective pores and method of use thereof Aug. 27, 2013
8513319 Mesoporous carbon materials Aug. 20, 2013
8501826 Process for the production of polyurethane products Aug. 6, 2013
8486531 Thermally expanded microspheres and a process for producing the same Jul. 16, 2013
8475616 Reactors for forming foam materials from high internal phase emulsions, methods of forming foam materials and conductive nanostructures therein Jul. 2, 2013
8465582 Process for producing inorganic interconnected 3D open cell bone substitutes Jun. 18, 2013
8465669 Monolith separation medium for chromatography and process for producing the same Jun. 18, 2013
8461223 Microporous polycyclopentadiene-based aerogels Jun. 11, 2013
8445554 Compressed porous materials suitable for implant May. 21, 2013
8436064 Open-cell polyurethane foam and process for its manufacture May. 7, 2013
8420705 Particulate materials for acoustic texture material Apr. 16, 2013
8399531 Foamable composition Mar. 19, 2013
8389588 Bi-phasic compressed porous reinforcement materials suitable for implant Mar. 5, 2013
8383733 Low-viscosity polymer polyols characterized by a high hydroxyl number Feb. 26, 2013
8378000 Water-absorbent, foam-type polymer structure Feb. 19, 2013
8361611 Diffusively light reflective paint composition, method for making paint composition, and diffusively light reflective articles Jan. 29, 2013
8357728 Porous material and method of production thereof Jan. 22, 2013
8329769 Facile synthesis of microporous triple-bond based polymer networks using acetylene gas as a building unit Dec. 11, 2012
8323837 Porous film Dec. 4, 2012
8318819 Compositions for compounding foamable, fluropolymer pellets for use in melt processing cellular or foamed fluoropolymer applications Nov. 27, 2012
8313865 Separator Nov. 20, 2012
8309256 Microporous film and method for producing the same Nov. 13, 2012
8298465 Microporous film and method for producing the same Oct. 30, 2012
8278366 Compositions for compounding, extrusion and melt processing of foamable and cellular fluoropolymers Oct. 2, 2012
8277719 Process for the preparation of auxetic foams Oct. 2, 2012
8257589 Polymeric foam coalescing agent Sep. 4, 2012
8258197 Synthesis of a highly crystalline, covalently linked porous network Sep. 4, 2012
8227521 Fluoropolymer foams prepared with the use of blowing agents and applications thereof Jul. 24, 2012
8222309 Elastomer porous material and method of producing the same Jul. 17, 2012
8217089 Elastomer porous material and method of producing the same Jul. 10, 2012
8217090 Elastomer porous material and method of producing the same Jul. 10, 2012
8211953 Polyolefin resin foam and process for production thereof Jul. 3, 2012
8163811 Fire retardant elastic foam material Apr. 24, 2012
8158689 Hybrid absorbent foam and articles containing it Apr. 17, 2012
8133923 Large-scale colloidal crystals and macroporous polymers and method for producing Mar. 13, 2012
8124661 Introducing voids into polymeric material for buffering one or more stress sensitive components from one or more stresses Feb. 28, 2012
8101101 Methods for improving the resistance of fumigant sorption in a produce container and a related produce containers Jan. 24, 2012
8101102 Method for improving the resistance of fumigant sorption in an expandable polymer produce container and a related container Jan. 24, 2012
8097274 Skin substitutes, preparation methods and uses thereof Jan. 17, 2012
8080596 Biodegradable plastic material and method for producing the same Dec. 20, 2011

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