Patents by Inventor Hisao Hayakawa

Hisao Hayakawa 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).

  • Josephson transmission line device
    Patent number: 4749888
    Abstract: A Josephson transmission line device comprising a Josephson transmission line consisting of a pair of superconducting layers and a junction layer disposed between the superconducting layers to constitute a Josephson junction; a fluxon stopping position constituted by at least one resistor element in at least a part of the Josephson transmission line; a fluxon driving current source connected to the resistor element; a fluxon generating current source connected to the Josephson transmission line for generating fluxons therein; and an output circuit for extracting the fluxons generated in the Josephson transmission line as output signals. Fluxons generated in the Josephson transmission line can be made to stop at and depart from the stopping positions by selective application of fluxon driving current.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: June 7, 1988
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Shigeki Sakai, Hiroshi Akoh, Hisao Hayakawa, Akihiko Yagi