Patents by Inventor Yukio Osaka

Yukio Osaka 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).

  • Three-dimensional integrated circuit with optically coupled shared memories
    Patent number: 4672577
    Abstract: Adjacent memory layers of a multi-layered integrated device as optically coupled, so that data written on one layer can be copied onto its adjacent layers through the optical coupling.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: June 9, 1987
    Assignee: Hiroshima University
    Inventors: Masataka Hirose, Masamichi Yamanishi, Yukio Osaka, Tadashi Ae, Tadao Ichikawa, Noriyoshi Yoshida, Ikuo Suemune
  • Information recording medium and method
    Patent number: 4629649
    Abstract: In an information recording medium comprising a substrate and a recording layer, the recording layer is formed from a germanium-tin material. Recording light may be conducted to the layer where amorphous-crystalline phase transition or crystal form change occurs.
    Type: Grant
    Filed: June 7, 1985
    Date of Patent: December 16, 1986
    Assignee: TDK Corporation
    Inventors: Yukio Osaka, Takeshi Imura, Toshio Nakashita