Patents by Inventor Ken'ichi Tokoro

Ken'ichi Tokoro 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).

  • Highly wear-resistant roll steel for cold rolling mills
    Patent number: 5061441
    Abstract: A steel from which rolls for a cold rolling mill are made and which gives to the rolls very excellent wear resistance in addition to thermal shock and spalling resistances and various mechanical characteristics is provided. Said steel comprises:C : 0.70 to 1.50 wt %Si: 0.15 to 1.00 wt %Mn: 0.15 to 1.50 wt %Cr: 2.50 to 10.00 wt %Mo: 1.00 wt % or lessV : 1.00 wt % or lessNi: 1.00 wt % or lessTi: 0.04 to 0.30 wt %with the balance being Fe and inevitable impurities.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: October 29, 1991
    Assignees: Kawasaki Steel Corporation, Kanto Special Steel Works, Ltd.
    Inventors: Ken'ichi Aoki, Yoshikazu Seino, Teruhiro Saito, Ken'ichi Tokoro