Patents by Inventor Hirosi Tobita

Hirosi Tobita 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).

  • Molten carbonate fuel cell
    Patent number: 4436794
    Abstract: In a molten carbonate fuel cell, an anode or cathode is made of a sintered material containing a nickel oxide and/or cobalt oxide and a rare earth element oxide. This anode or cathode has a high activity and is stable at high temperatures.
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: March 13, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Masato Takeuchi, Hideo Okada, Hirosi Tobita, Sigeru Okabe, Shinpei Matsuda, Munehiko Tonami, Kohki Tamura, Fumito Nakajima
  • Fuel cell
    Patent number: 4407905
    Abstract: Fuel cell with improved and stabilized electrode performance having at least one gas diffusion electrode, where the gas diffusion electrode comprises an electronconductive, gas-permeable substrate and an electrode catalyst uniformly distributed on the substrate, the electrode catalyst comprising colonies each consisting of not more than 20 primary particles of noble metal each having a size of 10-30 A and being uniformly distributed and deposited on carrier powder.
    Type: Grant
    Filed: October 14, 1981
    Date of Patent: October 4, 1983
    Assignee: Hitachi, Ltd.
    Inventors: Seizi Takeuchi, Kenzo Ishii, Toshiki Kahara, Jinichi Imahashi, Masato Takeuchi, Hideo Okada, Sigeru Okabe, Shimpei Matsuda, Fumito Nakajima, Hirosi Tobita, Kohki Tamura