Patents by Inventor Kazuhiko Kourida

Kazuhiko Kourida 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).

  • Patent number: 4880480
    Abstract: A high strength hot rolled steel sheet for wheel rims contains, by weight, from 0.05 to 0.15% of C, from 0.05 to 0.5% of Si, from 1.0 to 1.6% of Mn, from 0.01 to 0.05% of Al, from 0.005 to 0.025% of Ti and from 15 to 60 ppm of N, with the content of P limited to 0.030% or below and the content of S limited to 0.010% or below, the balance being iron and unavoidable impurities. The steel sheet optionally contains, by weight, from 0.01 to 0.06% of Nb or at least one selected from the group consisting of from 0.0005 to 0.01% of Ca and from 0.005 to 0.1% of rare earth metals.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: November 14, 1989
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Ichiro Kokubo, Kazuhiko Kourida, Shunichi Hashimoto, Kazuhiro Mimura, Zenichi Shibata