Patents by Inventor Kouichi Ishizuka

Kouichi Ishizuka 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).

  • Inspecting device for print
    Patent number: 4685139
    Abstract: The present invention relates to an inspecting device for a print which can scan the entire print pattern of a printed sheet by an optical detecting device, detects the image information of the print pattern at every pixel, calculates the difference between the detected image information with reference information, delays the differential signal in several pixels in the scanning direction of the optical detecting device, calculates the difference between the differential signal and the delayed differential signal, sets a threshold level to the twice differential signal produced from the result, and judges the production of a printing defect when the twice differential signal exceeds the threshold level, thereby accurately detecting the printing defect even when the entire variation in the color density occurs on the printed sheet.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: August 4, 1987
    Assignees: Toppan Printing Co., Ltd., Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Toshiro Masuda, Kouichi Ishizuka, Toshiji Fujita, Yoshio Kinoshita
  • Bumper for vehicle
    Patent number: D541715
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: May 1, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Kouichi Ishizuka
  • Surface configuration of a vehicle body, toy, and/or replica
    Patent number: D551596
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: September 25, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kouichi Ishizuka, Takashi Noguchi, Kazunori Murabayashi, Ajay Panchal