Patents by Inventor Ryuji Ogata

Ryuji Ogata 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).

  • Magnetic steel plate for use as a magnetic shielding member and a method for the manufacture thereof
    Patent number: 5019191
    Abstract: A magnetic steel plate for use as a magnetic shielding member and a method for the manufacture thereof are disclosed, and the steel composition consists essentially of, by weight %;C: not greater than 0.05%,Si: greater than 0.30%, but not greater than 1.50%,Mn: not greater than 0.50%, sol Al: less than 0.005%, with the balance being Fe and incidental impurities. The magnetic steel plate has a ferrite grain size of 0 (zero) or smaller.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: May 28, 1991
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Ryuji Ogata, Naokazu Nakano, Shuichi Suzuki