Patents by Inventor Toshihira IRISAWA

Toshihira IRISAWA 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).

  • Actuator
    Patent number: 11601074
    Abstract: An actuator capable of attaining high output. The actuator includes a frame structure part that forms a frame structure surrounding a housing part, and a volume change part housed in the housing part. The volume change part increases a volume thereof by input of external energy. The frame structure part has a higher Young's modulus than a Young's modulus of the volume change part. The housing part has an anisotropic shape, with a maximum width in first direction of the housing part longer than a maximum width in second direction different from the first direction of the housing part.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: March 7, 2023
    Assignees: DENSO CORPORATION, TOKYO INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM
    Inventors: Daichi Sakurai, Seiichiro Washino, Shota Chatani, Haruhiko Watanabe, Masatoshi Shioya, Daisuke Kimura, Toshihira Irisawa, Kentaro Takagi, Takashi Hasegawa
  • Method for producing a polybenzimidazole carbon fiber
    Patent number: 11473219
    Abstract: The present application provides methods for producing polybenzimidazole carbon fiber that does not require infusibilization treatment.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: October 18, 2022
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Toshihira Irisawa, Hiroaki Hatori, Yasushi Soneda, Masaya Kodama
  • ACTUATOR
    Publication number: 20210305917
    Abstract: An actuator capable of attaining high output. The actuator includes a frame structure part that forms a frame structure surrounding a housing part, and a volume change part housed in the housing part. The volume change part increases a volume thereof by input of external energy. The frame structure part has a higher Young's modulus than a Young's modulus of the volume change part. The housing part has an anisotropic shape, with a maximum width in first direction of the housing part longer than a maximum width in second direction different from the first direction of the housing part.
    Type: Application
    Filed: March 24, 2021
    Publication date: September 30, 2021
    Applicants: DENSO CORPORATION, TOKYO INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM
    Inventors: Daichi SAKURAI, Seiichiro WASHINO, Shota CHATANI, Haruhiko WATANABE, Masatoshi SHIOYA, Daisuke KIMURA, Toshihira IRISAWA, Kentaro TAKAGI, Takashi HASEGAWA
  • POLYBENZIMIDAZOLE CARBON FIBER AND METHOD FOR MANUFACTURING SAME
    Publication number: 20200056305
    Abstract: The present application provides methods for producing polybenzimidazole carbon fiber that does not require infusibilization treatment.
    Type: Application
    Filed: October 21, 2019
    Publication date: February 20, 2020
    Inventors: Toshihira IRISAWA, Hiroaki HATORI, Yasushi SONEDA, Masaya KODAMA
  • Precursor fiber for carbon fibers, carbon fiber, and method for producing carbon fiber
    Patent number: 9777408
    Abstract: To provide a carbon fiber precursor fiber that can efficiently produce a carbon fiber excellent in mechanical strength without an infusibilization treatment; a carbon fiber; and a method for producing the carbon fiber.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: October 3, 2017
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Toshihira Irisawa, Hiroaki Hatori, Yasushi Soneda, Masaya Kodama
  • POLYBENZIMIDAZOLE CARBON FIBER AND METHOD FOR MANUFACTURING SAME
    Publication number: 20170152612
    Abstract: The present application provides polybenzimidazole carbon fiber that does not require infusibilization treatment and method for producing same.
    Type: Application
    Filed: April 24, 2015
    Publication date: June 1, 2017
    Inventors: Toshihira IRISAWA, Hiroaki HATORI, Yasushi SONEDA, Masaya KODAMA
  • Precursor Fiber for Carbon Fibers, Carbon Fiber, and Method for Producing Carbon Fiber
    Publication number: 20150322593
    Abstract: To provide a carbon fiber precursor fiber that can efficiently produce a carbon fiber excellent in mechanical strength without an infusibilization treatment; a carbon fiber; and a method for producing the carbon fiber.
    Type: Application
    Filed: November 25, 2013
    Publication date: November 12, 2015
    Inventors: Toshihira IRISAWA, Hiroaki HATORI, Yasushi SONEDA, Masaya KODAMA