Patents by Inventor Ryuhei Uchiyama

Ryuhei Uchiyama 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).

  • Method for inspecting defect of hollow fiber porous membrane, defect inspection equipment and production method
    Patent number: 7940382
    Abstract: A method for inspecting a defect of a hollow fiber porous membrane having substantially uniform, continuous inner hollow portions comprises steps for introducing a part of the hollow fiber porous membrane into an irradiation chamber, for irradiating the hollow fiber porous membrane with light from the outside in the irradiation chamber, and for detecting light exiting the hollow fiber porous membrane on the outside of the irradiation chamber.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: May 10, 2011
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Makoto Ikeda, Ryuhei Uchiyama, Osamu Nagasawa
  • METHOD FOR INSPECTING DEFECT OF HOLLOW FIBER POROUS MEMBRANE, DEFECT INSPECTION EQUIPMENT AND PRODUCTION METHOD
    Publication number: 20100117250
    Abstract: A method for inspecting a defect of a hollow fiber porous membrane having substantially uniform, continuous inner hollow portions comprises steps for introducing a part of the hollow fiber porous membrane into an irradiation chamber, for irradiating the hollow fiber porous membrane with light from the outside in the irradiation chamber, and for detecting light exiting the hollow fiber porous membrane on the outside of the irradiation chamber.
    Type: Application
    Filed: March 16, 2007
    Publication date: May 13, 2010
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Makoto Ikeda, Ryuhei Uchiyama, Osamu Nagasawa