Patents by Inventor Tutomu Simada

Tutomu Simada 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).

  • Rear projection type image display apparatus
    Patent number: 5808704
    Abstract: A rear projection type image display apparatus having an arrangement that a projection distance of a projection lens thereof is shortened and a density of mounting of parts relating to an optical system and an electric system is made higher. Furthermore, a width of a rear portion of a housing of the rear projection type image display apparatus is reduced rearwards at any position from the upper portion to the lower portion thereof, and the lower portion of a back cover is depressed inwards. Thus, a space required to install the rear projection type image display apparatus can be reduced, the rear surface of the apparatus can be disposed on a wall without any gap when the apparatus is installed along the wall, and the overall body of the apparatus can be received deep into a corner of walls when the apparatus is installed at the corner.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: September 15, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Hiroki Yoshikawa, Takahiko Yoshida, Kiyoshi Wada, Shigeru Mori, Tetsu Ohishi, Toshimitsu Watanabe, Koji Suso, Yoshimasa Yokoyama, Akira Takahashi, Yasuhiko Komatsu, Yoshinori Matsumura, Kazunari Nakagawa, Kohsuke Ozeki, Maki Furui, Naoko Kubo, Tutomu Simada, Tohru Mori, Satoshi Ishizuka