Patents by Inventor Ayumu Komata

Ayumu Komata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200339739
    Abstract: A prepreg comprising: carbon fibers; and a resin composition containing an epoxy resin having a biphenyl structure, a curing agent, and melamine cyanurate.
    Type: Application
    Filed: November 13, 2018
    Publication date: October 29, 2020
    Applicant: JXTG Nippon Oil & Energy Corporation
    Inventors: Masaki MINAMI, Takayuki MATSUMOTO, Ayumu KOMATA
  • Publication number: 20170197948
    Abstract: Method for producing carboxylic anhydride, the method includes heating raw material compound represented by the following general formula (1): [in the formula (1), R1 is tetravalent organic group having at least two carbon atoms adjacent to each other, and groups represented by the formulae: —COOR2 and —COOR3 are bonded to one and the other of the two adjacent carbon atoms, respectively, R2 and R3 each represent hydrogen atom or the like, X represents hydrogen atom or the like, and Y represents hydrogen atom or the like] in carboxylic acid having 1 to 5 carbon atoms with catalyst being used, to thereby obtain the carboxylic anhydride, wherein the catalyst is homogeneous acid catalyst having acid dissociation constant (pKa) of ?6.5 or lower and boiling point of 100° C. or higher, the acid dissociation constant (pKa) being determined by quantum chemistry calculation based on density functional method.
    Type: Application
    Filed: May 13, 2015
    Publication date: July 13, 2017
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Rieko FUJISHIRO, Ayumu KOMATA, Takeshi KOIKE, Shinichi KOMATSU
  • Patent number: 9097836
    Abstract: The present invention can provide a methacrylic resin which has excellent transparency and color and less defects such as fish eyes and thus suitable for optical films by adding (A) a polymeric dispersant represented by formula (1) below and (B) an inorganic salt and/or organic salt selected from alkali metal salts, alkaline earth metal salts and ammonium salts when methyl methacrylate alone or a monomer mixture containing methyl methacrylate as one component is subjected to suspension-polymerization: (n=10 to 60 mol %, m=40 to 90 mol %, R1 is hydrogen or a methyl group, R2 is an alkyl group having 1 to 8 carbon atoms, and M is an alkali metal or alkaline earth metal or NH4.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: August 4, 2015
    Assignees: JX Nippon Oil & Energy Corporation, KEIO UNIVERSITY
    Inventors: Sayako Uchizawa, Akira Matsuo, Yasuo Matsumura, Ayumu Komata
  • Publication number: 20140316090
    Abstract: The present invention can provide a methacrylic resin which has excellent transparency and color and less defects such as fish eyes and thus suitable for optical films by adding (A) a polymeric dispersant represented by formula (1) below and (B) an inorganic salt and/or organic salt selected from alkali metal salts, alkaline earth metal salts and ammonium salts when methyl methacrylate alone or a monomer mixture containing methyl methacrylate as one component is subjected to suspension-polymerization: (n=10 to 60 mol %, m=40 to 90 mol %, R1 is hydrogen or a methyl group, R2 is an alkyl group having 1 to 8 carbon atoms, and M is an alkali metal or alkaline earth metal or NH4.
    Type: Application
    Filed: November 6, 2012
    Publication date: October 23, 2014
    Inventors: Sayako Uchizawa, Akira Matsuo, Yasuo Matsumura, Ayumu Komata