Patents by Inventor Kiyoshi Tatsugawa

Kiyoshi Tatsugawa 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: 20090196782
    Abstract: An object of the present invention is to provide a porous liquid absorbing-and-holding member having a high absorbing capacity for a liquid owing to capillarity and having in itself a structure capable of holding a large amount of the liquid, a process for producing this member, and a member for absorbing and holding an alcohol used as a fuel for a fuel cell. The porous liquid absorbing-and-holding member provided by the present invention is that including a porous sintered product having a skeleton formed by sintering of metal powder around voids and subjected to hydrophilicity-imparting treatment. The hydrophilicity-imparting treatment is preferably the formation of one or more substances selected from the group consisting of silicon oxides, titanium oxides, chromium oxides and aluminum oxide on the skeleton.
    Type: Application
    Filed: April 10, 2009
    Publication date: August 6, 2009
    Applicant: HITACHI METALS, LTD.
    Inventors: Kenji Date, Kiyoshi Tatsugawa, Katsuhiko Ohishi, Noriyuki Nakaoka
  • Publication number: 20060188741
    Abstract: An object of the present invention is to provide a porous liquid absorbing-and-holding member having a high absorbing capacity for a liquid owing to capillarity and having in itself a structure capable of holding a large amount of the liquid, a process for producing this member, and a member for absorbing and holding an alcohol used as a fuel for a fuel cell. The porous liquid absorbing-and-holding member provided by the present invention is that including a porous sintered product having a skeleton formed by sintering of metal powder around voids and subjected to hydrophilicity-imparting treatment. The hydrophilicity-imparting treatment is preferably the formation of one or more substances selected from the group consisting of silicon oxides, titanium oxides, chromium oxides and aluminum oxide on the skeleton.
    Type: Application
    Filed: February 7, 2006
    Publication date: August 24, 2006
    Inventors: Kenji Date, Kiyoshi Tatsugawa, Katsuhiko Ohishi, Noriyuki Nakaoka