Patents by Inventor Hiroyasu Ichiga

Hiroyasu Ichiga 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).

  • Discharge lamp with base for sealing the lamp
    Patent number: 4866341
    Abstract: A discharge lamp comprises a cylindrical glass bulb with an open bottom and a closed top of dome-shape or flat-shape, a base for holding an anode and a cathode with at least one separation plate for dividing an inner space of the bulb into plural spaces forming a folded discharge path, and the base is directly and airtightly bonded to the bottom opening of the bulb by heat softening of the bulb, and the anode and cathode are also airtightly fixed on the base by selectively melting down of a first adhesive and a second adhesive which each have different melting points.
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: September 12, 1989
    Assignee: West Electric Company, Ltd.
    Inventors: Hiroyasu Ichiga, Kiyoshi Tsutsumi, Nobuto Tsujikawa