Patents by Inventor Yoshitada Sakauchi

Yoshitada Sakauchi 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).

  • Electronic tubes
    Patent number: 4381472
    Abstract: In an electronic tube, a metal cylindrical member having, at the end, a cylindrical joint portion is bonded by brazing to the end of ceramic cylindrical member to form a hermetic seal structure. The metal cylindrical member is made of iron and dimensions thereof are specified such that the cylindrical joint portion has a wall thickness of 0.5 mm or less and a height of 1 mm or more.
    Type: Grant
    Filed: July 31, 1980
    Date of Patent: April 26, 1983
    Assignee: Hitachi, Ltd.
    Inventors: Yoshitada Sakauchi, Masayuki Hikiba