Patents by Inventor Kenichi Ohiwa

Kenichi Ohiwa 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).

  • Heat-resisting furnace roll
    Patent number: 4553931
    Abstract: A heat-resisting furnace roll which comprises a support roll and a ceramic sleeve fitted over said support roll is disclosed. The ceramic sleeve fits loosely over the support roll even when said support roll exhibits maximum expansion in both its radial and longitudinal directions.
    Type: Grant
    Filed: March 21, 1984
    Date of Patent: November 19, 1985
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Sadayuki Wachi, Kenichi Ohiwa, Yasuo Shimada, Takao Hino