Patents by Inventor Kazumasa Shima

Kazumasa Shima 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).

  • Programmable logic array circuit with a decreased number of product terms
    Patent number: 4717844
    Abstract: A programmable logic array circuit which assumes terms which are not implicants to be DON'T CARE terms, and which produces a logic function having decreased number of product terms; and which has a logic function which eliminates the terms that have been regarded to be DON'T CARE terms.
    Type: Grant
    Filed: February 27, 1986
    Date of Patent: January 5, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Kazumasa Shima, Syunpei Kawasaki, Takashige Kubo