Patents by Inventor Toru Takigawa

Toru Takigawa 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).

  • Hydrogen-oxygen burning turbine plant
    Patent number: 5782081
    Abstract: An object of the present invention is to transfer all of the exhaust heat from the topping gas turbine cycle and thereby improve the overall efficiency (i.e., the efficiency of the topping cycle plus bottoming cycle).
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: July 21, 1998
    Assignees: Pyong Sik Pak, Yutaka Suzuki, Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Pyong Sik Pak, Toru Takigawa, Hidetaka Mori, Kiichiro Ogawa
  • Image pickup tube devices
    Patent number: 4145722
    Abstract: In an image pickup tube device of the class comprising an image pickup tube including a face plate and a coil assembly surrounding the tube and a bias light source device including a plurality of luminous elements mounted in a hollow circular disc shaped frame, the frame is positioned in coaxial relationship with respect to the image pickup tube device by a recess provided for the frame for receiving the face plate, an annular projection at one end of the coil assembly for receiving the frame, or both.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: March 20, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Fumihide Takeuti, Toru Takigawa, Kenichi Takada
  • Image pickup device
    Patent number: 4039986
    Abstract: An image pickup device includes an image pickup tube, a coil assembly disposed around the image pickup tube, and elastic members disposed on the inner circumferential surface of the coil assembly in the proximity of an extremity at the side of a face plate of the image pickup tube and an extremity at the side of the stem thereof for coaxially fixing the image pickup tube and coil assembly, said elastic members comprising a commercially available O ring of elastic material.
    Type: Grant
    Filed: February 24, 1976
    Date of Patent: August 2, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuru Nakazawa, Toru Takigawa
  • Method of manufacturing light sensitive heterodiode
    Patent number: 3941672
    Abstract: A method of manufacturing a light sensitive heterodiode comprising an n-type transparent conductive layer and a p-type photoconductive layer provided thereon and forming rectifying contact therewith, in which before providing the p-type photoconductive layer on the n-type transparent conductive layer the surface of the latter is smoothed down by mechanical polishing or by bombarding it with ions accelerated by discharge.
    Type: Grant
    Filed: March 11, 1974
    Date of Patent: March 2, 1976
    Assignees: Hitachi, Ltd., Nippon Hoso Kyokai
    Inventors: Yasuo Tanaka, Hideaki Yamamoto, Keiko Ooki, Naohiro Goto, Toru Takigawa