Patents by Inventor Hidehito Usui

Hidehito Usui 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).

  • Semiconductor memory system
    Patent number: 5226015
    Abstract: A programmable semiconductor memory system employs an EPROM. The system holds the start and end addresses of each write operation to completely use a data storage region of the EPROM with no redundancy and with no limitation on the quantity of data to be written if the quantity is within the capacity of the EPROM.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: July 6, 1993
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masaji Gotou, Hidehito Usui, Hitoshi Kondo