Patents by Inventor Michiyuki Yoshino

Michiyuki Yoshino 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).

  • Projection display and optical aperture unit
    Patent number: 7798653
    Abstract: A gear portion meshing with the first step of a pinion gear at the side of a motor, which is a driving unit of optical aperture mechanism, is designed to be a two-gears composition of a gear portion abutting on one side surface of the channel of the pinion gear, and a gear portion abutting on the other side surface of the channel of the pinion gear.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: September 21, 2010
    Assignee: Hitachi Ltd.
    Inventors: Shinro Inui, Hiroshi Ooshima, Michiyuki Yoshino
  • Projection display and optical aperture unit
    Publication number: 20090174869
    Abstract: A gear portion meshing with the first step of a pinion gear at the side of a motor, which is a driving unit of optical aperture mechanism, is designed to be a two-gears composition of a gear portion abutting on one side surface of the channel of the pinion gear, and a gear portion abutting on the other side surface of the channel of the pinion gear.
    Type: Application
    Filed: August 9, 2006
    Publication date: July 9, 2009
    Inventors: Shinro Inui, Hiroshi Ooshima, Michiyuki Yoshino
  • Projection type image display device
    Patent number: 7140732
    Abstract: A projection type image display device superior in reliability and also superior in both repairability and maintainability is to be provided at a low cost. Support members disposed between liquid crystal panels and a prism are made of a thermoplastic polymer material, and the liquid crystal panels and the support members are fixed to each other by heat-fusion of the support members. When it is necessary to remove a liquid crystal panel which is at fault for example from the corresponding support member, the fused portion on the support member side which less expensive is cut off, thereby permitting the liquid crystal panel which is expensive to be taken out re-utilizably without any damage thereto.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: November 28, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Mikio Shiraishi, Fusamitsu Tsubata, Hiroshi Oshima, Michiyuki Yoshino, Yoshimasa Takeuchi, Tatsumi Hasebe
  • Projection type image display device
    Publication number: 20040263792
    Abstract: A projection type image display device superior in reliability and also superior in both repairability and maintainability is to be provided at a low cost. Support members disposed between liquid crystal panels and a prism are made of a thermoplastic polymer material, and the liquid crystal panels and the support members are fixed to each other by heat-fusion of the support members. When it is necessary to remove a liquid crystal panel which is at fault for example from the corresponding support member, the fused portion on the support member side which less expensive is cut off, thereby permitting the liquid crystal panel which is expensive to be taken out re-utilizably without any damage thereto.
    Type: Application
    Filed: March 24, 2004
    Publication date: December 30, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Mikio Shiraishi, Fusamitsu Tsubata, Hiroshi Oshima, Michiyuki Yoshino, Yoshimasa Takeuchi, Tatsumi Hasebe