Patents by Inventor Osamu Okayama

Osamu Okayama 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 memorizing device
    Patent number: 4849939
    Abstract: A semiconductor memory having a memory array, a first and a second selection line which are connected to a memory cell, and a selection means which selects either one of the selection lines. The selection means includes a selection circuit which optionally selects the first selection line or the second selection line when an address signal corresponding to the first selection line is aligned with a predetermined address signal.
    Type: Grant
    Filed: September 24, 1987
    Date of Patent: July 18, 1989
    Assignees: Hitachi, Ltd., Hitachi VLSI Engineering Corp.
    Inventors: Masaya Muranaka, Hiromi Matsuura, Kanehide Kenmizaki, Osamu Okayama