Patents by Inventor Sadao Otsuka

Sadao Otsuka 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).

  • Patent number: 11985291
    Abstract: Previously, users could not be notified when the 3D mode type of a program being received by a digital broadcast receiver was not compatible with the digital broadcast receiver. A reception device is provided with: a reception unit which receives program content including video information and identification information including information for distinguishing whether the program content is 2D program content or 3D program content; and a display control unit which controls the display so as to display whether the aforementioned program content is 2D program content or 3D program content in response to the received aforementioned identification information.
    Type: Grant
    Filed: May 15, 2023
    Date of Patent: May 14, 2024
    Assignee: Maxell, Ltd.
    Inventors: Satoshi Otsuka, Sadao Tsuruga
  • Patent number: 4579223
    Abstract: An oxygen absorbent packet comprising an oxygen absorbent packaged and sealed in a double packaging material 6 comprised of a gas-permeable outer material layer 1 composed of a plastic film or transparent paper, a gas-permeable sealing layer 2, an inner material layer 3 composed of gas-permeable paper or nonwoven cloth, and a gas-permeable sealing layer 4, and also containing an air layer 5 between layers and 1 and 2 or between layers 2 and 3.
    Type: Grant
    Filed: January 27, 1984
    Date of Patent: April 1, 1986
    Assignee: Mitsubishi Gas Chemical Company Inc.
    Inventors: Sadao Otsuka, Takehiko Moriya, Toshio Komatsu, Akira Katada
  • Patent number: 3962073
    Abstract: A process for treating a waste liquor from a hydrosulfite process by an activated sludge process is improved by aerating the waste in the presence of a metal ion before the activated sludge process.
    Type: Grant
    Filed: August 9, 1974
    Date of Patent: June 8, 1976
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Yoshio Yoshikawa, Sadao Otsuka, Akira Amemiya, Toshio Komatsu