Patents by Inventor Masahiro Ojima

Masahiro Ojima 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).

  • Member for recording information
    Patent number: 4296419
    Abstract: A recording member in which a bismuth-antimony alloy thin film containing antimony as its indispensable component is deposited on a predetermined substrate is disclosed. The Sb content of the film lies in a range of from 1 % to 15 % inclusive in terms of the average atomic-%. Preferably, the Sb content has the average value held in the specified range, and it is gradually increased in the thickness direction of the film so that in the part near the substrate and/or front surface of the film, the maximum content may lie within a range of at most three times the average content of other part of the film.
    Type: Grant
    Filed: September 17, 1979
    Date of Patent: October 20, 1981
    Assignee: Hitachi, Ltd.
    Inventors: Motoyasu Terao, Kazuo Shigematsu, Masahiro Ojima, Seiji Yonezawa