Patents by Inventor Tsutomu Fuchi

Tsutomu Fuchi 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).

  • Light source device to be utilized mainly for projection purposes
    Patent number: 4070594
    Abstract: The present invention discloses a light source device to be utilized mainly for projection purposes in which a plurality of light-emitting sections and a plurality of non-light-emitting sections are alternately connected. Each light emitting section consisting of a halogen lamp comprising a lamp tube made of quartz and enclosing a coiled filament as a single light emitting element and sealing therein inert gas and halogen while the non-light-emitting section consisting of a supporting member for supporting the halogen lamp, the halogen lamps being electrically interconnected in series.
    Type: Grant
    Filed: February 10, 1976
    Date of Patent: January 24, 1978
    Assignee: Matsushita Electronics Corporation
    Inventors: Tsutomu Fuchi, Hiroshi Toyoda