Patents by Inventor Munenori Shiratake

Munenori Shiratake 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).

  • POLYCARBONATE RESIN COMPOSITION, AND OPTICAL MATERIAL AND OPTICAL LENS EACH MANUFACTURED USING SAME
    Publication number: 20170051146
    Abstract: A polycarbonate resin composition including: a polycarbonate resin (A) which has a constitutional unit (a) represented by general formula (4); and a polycarbonate resin (B) which has a constitutional unit (b) represented by general formula (5). (In formula (4), X represents an alkylene group having 1 to 4 carbon atoms.) (In formula (5), R1 and R2 independently represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms, a cycloalkoxyl group having 5 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an aryloxy group having 6 to 20 carbon atoms; and Y represents an alkylene group having 1 to 4 carbon atoms.
    Type: Application
    Filed: April 28, 2015
    Publication date: February 23, 2017
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Hirohito ISHIZUKA, Noriyuki KATO, Kentaro ISHIHARA, Munenori SHIRATAKE, Manabu HIRAKAWA
  • RESIN PRODUCED BY POLYCONDENSATION, AND RESIN COMPOSITION
    Publication number: 20170044312
    Abstract: According to one embodiment, a polyester resin is provided, which includes a structural unit derived from a compound represented by general formula (1), a structural unit derived from a compound represented by general formula (2), and a structural unit derived from a dicarboxylic acid or a derivative thereof.
    Type: Application
    Filed: May 1, 2015
    Publication date: February 16, 2017
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Noriyuki KATO, Hirohito ISHIZUKA, Munenori SHIRATAKE, Kentaro ISHIHARA
  • Polycarbonate resin, production method therefor, and optical molded body
    Patent number: 9360593
    Abstract: The polycarbonate resin of the present invention has a structural unit represented by general formula (A): (in formula (A), X is an alkylene group having 1 to 4 carbon atoms).
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: June 7, 2016
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Hirohito Ishizuka, Yoshio Nishimura, Noriyuki Kato, Takashi Ishii, Kouji Hirose, Kentarou Ishihara, Munenori Shiratake
  • Polyformal resin copolymer and method for producing the same
    Patent number: 9321887
    Abstract: Provided is a thermoplastic resin having a high refractive index, which is favorable as an optical material. Provided are a polyformal resin copolymer comprising a high refractive index diol that has a fluorene skeleton and an aromatic diol that has a low glass-transition point when polymerized, and a method for producing the same.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: April 26, 2016
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Munenori Shiratake, Yoshio Nishimura, Noriyuki Kato, Takashi Ishii, Hirohito Ishizuka
  • POLYCARBONATE RESIN, PRODUCTION METHOD THEREFOR, AND OPTICAL MOLDED BODY
    Publication number: 20150285954
    Abstract: The polycarbonate resin of the present invention has a structural unit represented by general formula (A): (in formula (A), X is an alkylene group having 1 to 4 carbon atoms).
    Type: Application
    Filed: November 1, 2013
    Publication date: October 8, 2015
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Hirohito Ishizuka, Yoshio Nishimura, Noriyuki Kato, Takashi Ishii, Kouji Hirose, Kentarou Ishihara, Munenori Shiratake
  • POLYFORMAL RESIN COPOLYMER AND PRODUCTION METHOD
    Publication number: 20150284510
    Abstract: Provided is a thermoplastic resin having a high refractive index, which is favorable as an optical material. Provided are a polyformal resin copolymer comprising a high refractive index diol that has a fluorene skeleton and an aromatic diol that has a low glass-transition point when polymerized, and a method for producing the same.
    Type: Application
    Filed: November 6, 2013
    Publication date: October 8, 2015
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Munenori Shiratake, Yoshio Nishimura, Noriyuki Kato, Takashi Ishii, Hirohito Ishizuka