Patents by Inventor Tadatake Okai

Tadatake Okai 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).

  • Getter device
    Patent number: 4342662
    Abstract: A getter device is disclosed in which at least on the exposed surface of a getter material filled in a metal getter container and containing a barium-aluminum alloy powder and a nickel powder is formed a gas-impermeable film of a boron compound or a mixture of a boron compound with silicon oxide.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: August 3, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Sakae Kimura, Masahiro Shimura, Tadatake Okai