Patents by Inventor Kenji Tatsumi

Kenji Tatsumi 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).

  • Image display system
    Patent number: 6337724
    Abstract: A plurality of liquid crystal modules is vertically and horizontally arranged, each of which is supplied light by a light source via optical fibers. A screen can be wound up at a cabinet. An image from each of the plurality of liquid crystal modules does not interfere one another because a light shielding board is installed.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: January 8, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshio Itoh, Haruhiko Nagai, Tsunehiro Imamura, Takayoshi Semasa, Kenji Tatsumi, Shuji Iwata, Hiroshi Mitsuda, Yasuhito Myoi, Toshimasa Tomoda, Fumio Suzuki, Yoshisuke Ohtsuru
  • Semiconductor laser excited solid laser device
    Patent number: 5091915
    Abstract: A semiconductor laser excited solid laser device of side light excited type in which the excitation region is well matched with the mode volume of the laser oscillation mode, for providing high output and high efficiency. The semiconductor laser excited solid laser device comprises a diffraction grating for diffracting the output light beams of the semiconductor lasers in a direction of formation of the laser resonator mode in application of the output light beams to the solid laser medium.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: February 25, 1992
    Assignee: Mitsubishi Denki K.K.
    Inventors: Kenji Tatsumi, Yoshihito Hirano
  • Swing measuring device
    Patent number: 4577863
    Abstract: The height and inclination of a batter's swing plane are measured by a batting practice device shaped like a home plate and including a laser source and photosensors for detecting laser light reflected by the bat when swung over the plate.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: March 25, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Sho Ito, Kenji Tatsumi, Kumio Kasahara, Tomoyuki Nakaguchi, Toshio Takei, Shojiro Nakahara