Patents by Inventor Kouji Kakizawa

Kouji Kakizawa 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).

  • Compact electronic calculator
    Patent number: 3963906
    Abstract: A compact electronic calculator having an input circuit defined by a plurality of lead switches mounted beneath an operative surface for selective actuation by a manually manipulatable permanent magnet. The calculator further includes a calculating circuit coupled to said input circuit and formed from LSI elements, display means formed from liquid crystal display elements and a battery power source.
    Type: Grant
    Filed: November 9, 1973
    Date of Patent: June 15, 1976
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventors: Katsumi Yamamura, Kouji Kakizawa, Minoru Hosokawa