Patents by Inventor Yoshiaki Azumi

Yoshiaki Azumi 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: 4741599
    Abstract: A device for exchanging the display information to be given to an electrostatic display apparatus constituted with many electrostatic display units arranged to form a matrix. The present device comprises a RAM and a backup battery, both mounted on a base plate detachable from the main circuit of the device. This device makes it possible to partially change the display information data without interrupting the display in proceeding.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: May 3, 1988
    Assignee: Daiwa Shinku Corporation
    Inventors: Hidehiko Togo, Yoshiaki Azumi