Patents by Inventor Hidetoshi Hashizume

Hidetoshi Hashizume 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).

  • Position adjusting method and position adjusting system of color combining optical system, position adjusting method and position adjusting system of optical modulator , color combining optical system and projector
    Publication number: 20020113976
    Abstract: In order to adjust position of color combining optical system relative to a color separating optical system accommodated in an optical component casing for producing a projector, a white laser beam is irradiated on an optical axis of a light beam passing through the optical component casing and is separated by the color separating optical system, the separated respective color lights being incident on a light-incident end surface of the color combining optical system to be combined, the combined light beam being detected by a sensor, in which the position is adjusted while detecting the combined light beam.
    Type: Application
    Filed: February 13, 2002
    Publication date: August 22, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masashi Kitabayashi, Shohei Fujisawa, Hidetoshi Hashizume
  • Ink cartridge
    Patent number: D475402
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: June 3, 2003
    Assignee: Seiko Epson Corporation
    Inventors: Tetsu Nakayama, Nobutoshi Otuka, Hidetoshi Hashizume
  • Printer
    Patent number: D480417
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: October 7, 2003
    Assignee: Seiko Epson Corporation
    Inventors: Tetsu Nakayama, Kenichi Nakajima, Hidetoshi Hashizume