Patents by Inventor Keiichi Shintaku

Keiichi Shintaku 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).

  • Patent number: 4190511
    Abstract: A metallic member is disposed in the vicinity of a mirror within an internal mirror type gas laser tube, and an electric discharge is excited between an internal laser anode and the metallic member. The metallic member serves as a cathode to sputter the metal of the metallic member onto the surface of the internal mirror. The metal adheres to the surface of the mirror and forms a metallic film thereon. The output power of the lower tube is monitored during the sputtering process and the sputtering process is terminated when the output power is reduced to a desired output power value.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: February 26, 1980
    Assignee: Nippon Electric Co., Ltd.
    Inventor: Keiichi Shintaku
  • Patent number: 4064466
    Abstract: A gas laser tube includes a metal supporting body installed at one end of the laser tube. A seal casing is secured to the supporting body, and accommodates at least one cylindrical holding body having one end cut to a Brewster angle, and an optical flat plate installed in close contact with the cut surface of the holding body. A reflecting mirror is secured to an end of the seal casing.
    Type: Grant
    Filed: October 19, 1976
    Date of Patent: December 20, 1977
    Assignee: Nippon Electric Company, Ltd.
    Inventors: Fumio Seki, Taizo Oikado, Keiichi Shintaku