Patents by Inventor Kakunosuke Miyashita

Kakunosuke Miyashita 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).

  • Adamite roll containing cobalt
    Patent number: 3968551
    Abstract: An steel based Adamite roll containing, in weight percent, from 1.0 to 2.2 percent C, from 0.5 to 0.8 percent Si, from 0.5 to 0.8 percent Mn, from 0.5 to 1.0 percent Ni, from 1.0 to 2.0 percent Cr, from 0.1 to 1.0 percent Mo and from 0.5 to 2.0 percent Co, and the balance being Fe. The steel based Adamite roll containing cobalt improves wear resistance and minimizes surface-roughness which are incurred to the hot rolling, and prevents defects such as surface roughness and defective dimensions of a steel rolled.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: July 13, 1976
    Assignee: Hitachi Metals, Ltd.
    Inventor: Kakunosuke Miyashita
  • Low carbon, Ni-Cr-Mo system cast iron roll
    Patent number: 3951650
    Abstract: A low carbon, Ni-Cr-Mo system cast iron roll containing, in weight percent, from 1.5 to 2.8% C, from 0.2 to 0.7% Si, from 0.6 to 0.8% Mn, from 2.1 to 3.5% Ni, from 1.8 to 2.5% Cr, from 1.1 to 1.5% Mo, the balance being essentially Fe and a reasonable amount of impurities. This roll prevents peeling of the top or outermost surface of the roll in the hot rolling, due to the cracking of cementite, and improves the resistance to the surface roughness and wear resistance, thereby improving the efficiency in the rolling operation.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: April 20, 1976
    Assignee: Hitachi Metals, Ltd.
    Inventor: Kakunosuke Miyashita