Patents by Inventor Rikio Yamamoto

Rikio Yamamoto 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
    Patent number: 4931685
    Abstract: A discharge lamp includes a bulb in which a pair of electrodes are installed and mercury and a rear gas are sealed. A heater unit is tightly attached to the outer surface of the bulb by a heat-shrinkable tube fitted over the bulb. The heater unit includes a thin flexible heater for heating the bulb to promote the evaporation of the mercury, and a pair of film members fixed on both sides of the heater so as to reinforce the heater.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: June 5, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshitomi Dobashi, Rikio Yamamoto