Patents by Inventor Kohtaro Kohmoto

Kohtaro Kohmoto 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).

  • Glow switch starter having metal oxide deposit
    Patent number: 4562379
    Abstract: In a glow switch starter comprising an airtight envelope in which a dischargeable gas is contained, and an electrode assembly hermetically sealed in one end of the envelope and having a stem in which a pair of electrodes are set, one or both of which are movable electrodes, a film formed of a mixture of 40% to 90% (by weight) metal barium and 60% to 10% (by weight) metal oxide is deposited on that region of the inner surface of the envelope, which is spaced apart from the stem, at a rate of 0.4 mg to 12.5 mg per cubic centimeter of the envelope capacity.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: December 31, 1985
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Yoshitomi Dobashi, Masahiko Asakura, Kohtaro Kohmoto
  • Fluorescent lamp with layer of plural phosphors having different particle sizes
    Patent number: 4447756
    Abstract: A flourescent lamp, having a vacuum tight radiation transmitting envelope comprising mercury and rare gas, provided with electrodes between which the discharge takes place during operation and a luminescent layer which comprises a mixture of phosphors having different densities wherein the greater the density of the phosphor, the smaller its particle size.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: May 8, 1984
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Kohtaro Kohmoto, Hiroyuki Ebara, Hisami Nira
  • Fluorescent lamp
    Patent number: 4199707
    Abstract: A fluorescent lamp which comprises a vacuum-tight envelope provided with electrodes between which discharge takes place during the operation of said fluorescent lamp.
    Type: Grant
    Filed: August 29, 1978
    Date of Patent: April 22, 1980
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Junetsu Akiyama, Takayoshi Fuchida, Akira Taya, Kazunori Nagafuchi, Kohtaro Kohmoto, Tomohiko Kobuya