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Class Information
Number: 528/220
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > From ketone or ketene reactant
Description: Subject matter under Class 520, ... involving polymers derived from a ketone reactant or processes of polymerizing; polymerizable compositions containing as a reactant a ketone or process of preparing .

Sub-classes under this class:

Class Number Class Name Patents
528/222 Polymerizing in the presence of a specified material other than a reactant 166
528/227 With aldehyde or derivative thereof as reactant 53
528/228 With nitrogen-containing reactant 169
528/226 With sulfur-containing reactant 224

Patents under this class:

Patent Number Title Of Patent Date Issued
8710176 Method for producing a sulfonated polyarylether block copolymer Apr. 29, 2014
8653223 Transketalized compositions, synthesis, and applications Feb. 18, 2014
8647725 Cellulose acylate film, polarizing plate and liquid crystal display device Feb. 11, 2014
8629232 Polymeric materials Jan. 14, 2014
8623970 Diaphragm for electro-acoustic transducer Jan. 7, 2014
8609131 Absorbent dressing comprising hydrophilic polymer prepared via Michael reaction Dec. 17, 2013
8592531 Prosthetic devices Nov. 26, 2013
8580898 Copolymer polyester resin and molded product using same Nov. 12, 2013
8575298 Polyether ether ketone, and method for purification of polymer material Nov. 5, 2013
8546519 Polyketal compounds, synthesis, and applications Oct. 1, 2013
8535805 Hydrophobic nanostructured thin films Sep. 17, 2013
8524958 Process for preparation of oligomeric or polymeric compounds using selective Michael addition Sep. 3, 2013
8519081 Polysulfone polymers and related polymer electrolyte membranes and fuel cells Aug. 27, 2013
8492510 Multifunctional degradable nanoparticles with control over size and functionalities Jul. 23, 2013
8487070 Sulfonated poly(arylene ether) having crosslinkable moiety combined in chain of polymer, sulfonated poly(arylene ether) having crosslinkable moieties combined in polymer and at polymer end gro Jul. 16, 2013
8436106 Crosslinkers and materials produced using them May. 7, 2013
8426516 Polymer compound having aroylbiphenylene skeleton and thermocurable film forming polymer composition Apr. 23, 2013
8420767 Polyarlene-based polymer, preparation method for the same, and polymer electrolyte membrane for fuel cell using the polymer Apr. 16, 2013
8399047 Multifunctional CVD coatings Mar. 19, 2013
8389672 Diaphragm for electro-accoustic transducer Mar. 5, 2013
8383758 Biodegradable polyketal polymers and methods for their formation and use Feb. 26, 2013
8349905 Proton-conducting polymer and uses thereof Jan. 8, 2013
8344091 Polymer and membrane-electrode assembly for fuel cell, and fuel cell system including the same Jan. 1, 2013
RE43880 Solvent free low-melt viscosity imide oligomers and thermosetting polymide composites Dec. 25, 2012
8334358 Sulfonated poly(arylene ether) copolymers and related polymer electrolyte membranes and fuel cells Dec. 18, 2012
8314202 Deoxybenzoin-derived anti-flammable polymers Nov. 20, 2012
8288500 Sulfonated poly(arylene ether) copolymers and related polymer electrolyte membranes and fuel cells Oct. 16, 2012
8252846 Strategies for delivery of active agents using micelles and particles Aug. 28, 2012
8222367 Polymers for use in fuel cell components Jul. 17, 2012
8173763 Carbon nanofibers and nanotubes grafted with a hyperbranched poly (ether-ketone) and its derivatives May. 8, 2012
8173323 Binder for a fuel cell catalyst composition, a membrane electrode assembly for a fuel cell using the binder and a method for preparing a membrane electrode assembly May. 8, 2012
8163406 Membrane-electrode assembly for solid polymer electrolyte fuel cell Apr. 24, 2012
8158742 Deoxybenzoin-based anti-flammable polyphosphonate and poly(arylate-phosphonate) copolymer compounds, compositions and related methods of use Apr. 17, 2012
8137822 Synthesis of phenyl-substituted polyfluoroanthenes and the use thereof Mar. 20, 2012
8133515 Alkynes and methods of reacting alkynes with 1,3-dipole-functional compounds Mar. 13, 2012
8129498 Polymeric medium Mar. 6, 2012
8119764 Medical devices made of a polymer material Feb. 21, 2012
8115034 Polyketone plasticizers Feb. 14, 2012
8110636 Multi-block sulfonated poly(phenylene) copolymer proton exchange membranes Feb. 7, 2012
8084568 Poly(arylene ether) copolymer having cation-exchange group, process of manufacturing the same, and use thereof Dec. 27, 2011
8063174 Polybenzimidazole compounds Nov. 22, 2011
8048966 Use of a kinked rigid-rod polyarylene Nov. 1, 2011
8030437 Methods for forming composite articles from tailorable polyimide resin systems using RTM and RI techniques Oct. 4, 2011
7994274 Two-stage cure polyimide oligomers Aug. 9, 2011
7985353 Oligomeric is polyacene and semiconductor formulations Jul. 26, 2011
7964697 Polyarylether membranes Jun. 21, 2011
7951898 Biodegradable polyketal polymers and methods for their formation and use May. 31, 2011
7951878 Halogen-free flameproof epoxy resin formulations May. 31, 2011
7947800 Poly(aryl ether) with pendent sulfonic acid phenyl groups May. 24, 2011
7906225 Synthesis of phenyl-substituted fluoranthenes by a diesel-alder and the use thereof Mar. 15, 2011

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