Patents by Inventor Rieko Yoshikawa

Rieko Yoshikawa 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).

  • Gateway for use in load control system
    Patent number: 4763104
    Abstract: A gateway circuit which exchanges information between a leased-line information transmission system and a power line carrier information transmission system includes a control circuit which receives and formats information transmitted over the leased-line information system and a separate control circuit which receives and formats information received over the power line carrier system. The formatted information is provided to a third control circuit which buffers the information and converts between the leased-line format and the power line carrier format to enable signal exchange between the two information transmission systems. The general control circuit responds to load control commands generated by manual switches located on the control unit and to load control commands forwarded over the leased-line system.
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: August 9, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiro Inoue, Rieko Yoshikawa, Yoshiji Minagawa, Noriyuki Kushiro