Patents by Inventor Keizo Tomokuni

Keizo Tomokuni 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 producing hydrogen-containing gas for fuel cell
    Patent number: 6190430
    Abstract: An efficient method for producing a hydrogen-containing gas for a fuel cell by using a gas produced by reforming reaction of an organic compound is disclosed. The method comprises the following steps: adding an oxygen-containing gas to a hydrogen-containing gas containing carbon monoxide to form a mixed gas, and bringing the mixed gas into contact with a catalyst comprising a ruthenium metal as a main component and having a carbon monoxide adsorption of not less than 1 mmol/g-ruthenium and a carbon monoxide adsorption index of not less than 0.5, to thereby oxidize and remove carbon monoxide.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: February 20, 2001
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Yohei Fukuoka, Keizo Tomokuni, Hitoshi Nakajima