Patents by Inventor Yutaka Takasu

Yutaka Takasu 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).

  • Flow processing system
    Patent number: 5002455
    Abstract: A flow processing system for processing disc-shaped articles such as discs to be used to produce video or audio disc masters, whereby a plurality of processing units for performing respectively different processing operations are combined into a single system in which each disc is moved only horizontally and in a continuously rotating condition, both during processing and while being moved between the processing units. In addition, the supporting structure of the processing units is implemented such as to produce no disturbances in a horizontally directed dust-excluding flow of air, to ensure maximum prevention of adherence of dust particles to the disc surfaces.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: March 26, 1991
    Assignee: Pioneer Electronic Corporation
    Inventors: Kazumi Kuriyama, Yutaka Takasu, Shigeru Kono, Chiharu Koshio, Kazuhiko Nagata
  • Apparatus for detecting faults on the surface of a resist master disc and measuring the thickness of the resist coating layer
    Patent number: 4865445
    Abstract: An apparatus for detecting faults on the surface of a resist master disc and for measuring the thickness of the resist coating layer includes a single light source for generating a laser beam for inspection of the master disc, a first separator for separating the laser beam into a first laser beam which is used for the detection of faults, and a second laser beam which is used to measure the thickness of the resist coating layer. The second laser beam is further separated into two laser beams one of which is irradiated on the surface of the resist coated master disc at a given angle of incidence.
    Type: Grant
    Filed: September 10, 1987
    Date of Patent: September 12, 1989
    Assignee: Pioneer Electronic Corporation
    Inventors: Kazumi Kuriyama, Shigeru Kono, Yutaka Takasu, Chiharu Koshio, Kazuhiko Nagata
  • Flow processing system
    Patent number: 4850791
    Abstract: A flow processing system for processing disc-shaped articles such as discs to be used to produce video or audio disc masters, whereby a plurality of processing units for performing respectively different processing operations are combined into a single system in which each disc is moved only horizontally and in a continuously rotating condition, both during processing and while being moved between the processing units. In addition, the supporting structure of the processing units is implemented such as to produce no disturbances in a horizontally directed dust-excluding flow of air, to ensure maximum prevention of adherence of dust particles to the disc surfaces.
    Type: Grant
    Filed: September 10, 1987
    Date of Patent: July 25, 1989
    Assignee: Pioneer Electronic Corporation
    Inventors: Kazumi Kuriyama, Yutaka Takasu, Shigeru Kono, Chiharu Koshio, Kazuhiko Nagata
  • Heat radiation system for electronic devices
    Patent number: 4414604
    Abstract: A container for electronic devices including heat generating elements comprises at least a first vertical wall portion formed therein with a closed conduit system and a heat exchange medium filling said closed conduit system, said heat exchange medium changing states from liquid to vapor by absorbing the heat generated by said elements, a lower end portion of said wall portion being adapted to be thermally connected to said elements.
    Type: Grant
    Filed: April 2, 1982
    Date of Patent: November 8, 1983
    Assignee: Pioneer Electronic Corporation
    Inventors: Fumio Matsui, Yutaka Takasu