Patents by Inventor Yuuji TSUNODA

Yuuji TSUNODA 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).

  • Polyarylene block copolymer having sulfonic acid group and use thereof
    Patent number: 8729219
    Abstract: A polyarylene block copolymer can provide a solid polymer electrolyte and proton conductive membrane having high proton conductivity, high dimensional stability, and high mechanical strength. The polyarylene block copolymer also has reduced swelling in hot water and reduced shrinkage in drying. The polyarylene block copolymer includes a polymer segment having a sulfonic acid group, and a polymer segment having substantially no sulfonic acid group.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: May 20, 2014
    Assignee: JSR Corporation
    Inventors: Yoshitaka Yamakawa, Toshiaki Kadota, Takuya Murakami, Yuuji Tsunoda
  • POLYARYLENE BLOCK COPOLYMER HAVING SULFONIC ACID GROUP AND USE THEREOF
    Publication number: 20130085236
    Abstract: A polyarylene block copolymer can provide a solid polymer electrolyte and proton conductive membrane having high proton conductivity, high dimensional stability, and high mechanical strength. The polyarylene block copolymer also has reduced swelling in hot water and reduced shrinkage in drying. The polyarylene block copolymer includes a polymer segment having a sulfonic acid group, and a polymer segment having substantially no sulfonic acid group.
    Type: Application
    Filed: June 8, 2011
    Publication date: April 4, 2013
    Applicant: JSR CORPORATION
    Inventors: Yoshitaka Yamakawa, Toshiaki Kadota, Takuya Murakami, Yuuji Tsunoda
  • POLYARYLENE BLOCK COPOLYMER HAVING SULFONIC ACID GROUP AND USE THEREOF
    Publication number: 20120052412
    Abstract: A polyarylene copolymer having a sulfonic acid group which has high proton conductivity and reduced swelling in hot water and reduced shrinkage in drying; a solid polymer electrolyte and a proton conductive membrane comprising the copolymer; and a membrane-electrode assembly using these. The polyarylene block copolymer comprises a polymer segment (A) having a sulfonic acid group, and a polymer segment (B) having substantially no sulfonic acid group, the polymer segment (B) having substantially no sulfonic acid group comprising a structural unit represented by the following formula (1).
    Type: Application
    Filed: August 19, 2011
    Publication date: March 1, 2012
    Applicants: HONDA MOTOR CO., LTD., JSR CORPORATION
    Inventors: Yoshitaka YAMAKAWA, Toshiaki KADOTA, Takuya MURAKAMI, Yuuji TSUNODA, Masaru IGUCHI, Kaoru FUKUDA