Patents by Inventor Katumi Okai

Katumi Okai 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).

  • Ceramic catalytic converter
    Patent number: 6162404
    Abstract: A catalytic converter has a ceramic catalytic support, a cylindrical casing for holding the catalytic support therein and a holding member disposed between the catalytic support and the casing. The holding member has a plurality of net-like layers, each of which is parallel to a circumferential surface of the catalytic support and has fibers randomly tangled with each other. Because of this structure, when the catalytic converter is assembled, damage to the fibers and separation of the fibers of the holding member can be prevented. As a result, the holding member can securely and steadily hold the catalytic support within the casing.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: December 19, 2000
    Assignee: Denso Corporation
    Inventors: Senta Tojo, Hiroshi Mori, Katumi Okai