Patents by Inventor Katsushi Kitagawa

Katsushi Kitagawa 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).

  • Mixed-firing burners for use with pulverized coal and heavy oil
    Patent number: 4208180
    Abstract: A heavy oil supply pipe, a protective pipe, an air supply pipe for burning heavy oil, a coal-air supply pipe, a coolant supply pipe and a protective caster are arranged concentrically in the order mentioned. A coal whirler and an air whirler are provided to inpart whirling motions to coal flame and heavy oil flame for thoroughly admixing them.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: June 17, 1980
    Assignee: Ube Industries, Ltd.
    Inventors: Michiharu Nakayasu, Kenzo Kumamoto, Kenji Suzuki, Arata Kuba, Katsushi Kitagawa