Patents by Inventor Kiyoshi Tsutsumi

Kiyoshi Tsutsumi 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).

  • Electric discharge tube, method for forming reflective film of electric discharge tube, and light emitting device
    Patent number: 8604685
    Abstract: A light emitting device includes a glass bulb and a reflective film formed in a region having an angle of at least 230° on an outer peripheral surface of the glass bulb. The light emitting device can obtain the reflective film having a sufficient film thickness in a wide region on an outer peripheral surface of an electric discharge tube and has a uniform light intensity distribution.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: December 10, 2013
    Assignee: Panasonic Corporation
    Inventors: Yasushi Ogino, Kiyoshi Tsutsumi, Toshiaki Murai
  • ELECTRIC DISCHARGE TUBE, METHOD FOR FORMING REFLECTIVE FILM OF ELECTRIC DISCHARGE TUBE, AND LIGHT EMITTING DEVICE
    Publication number: 20120019119
    Abstract: A light emitting device includes a glass bulb and a reflective film formed in a region having an angle of at least 230° on an outer peripheral surface of the glass bulb. The light emitting device can obtain the reflective film having a sufficient film thickness in a wide region on an outer peripheral surface of an electric discharge tube and has a uniform light intensity distribution.
    Type: Application
    Filed: January 25, 2010
    Publication date: January 26, 2012
    Applicant: Panasonic Corporation
    Inventors: Yasushi Ogino, Kiyoshi Tsutsumi, Toshiaki Murai
  • 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