Patents by Inventor Tsutomu Oi

Tsutomu Oi 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).

  • Water-electrolysis-device-use electrode plate, unit, solid electrolytic membrane unit and electrolytic cell
    Patent number: 6852205
    Abstract: According to the present invention, there is provided an electrode plate for a water electrolysis device, which is formed from a metal plate having such a thickness as to be capable of being press-formed, and which comprises a flat plate portion, and a peripheral edge portion positioned on the outer side of the flat plate portion and bent so that recesses and protrusions are alternately arrayed along an outer peripheral edge thereof.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: February 8, 2005
    Assignee: Shinko-Pantec Co., Ltd.
    Inventors: Manabu Toyoshima, Masaru Yonezawa, Kiyoshi Hirai, Akiko Miyake, Yutaka Ishii, Tsutomu Oi, Shingo Toriu