Patents by Inventor Yasutel Fujii

Yasutel Fujii 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).

  • Key input device
    Patent number: 4872008
    Abstract: In a key input device, the depression of any one of the keys of a keyboard applies a voltage to an analog-digital conversion input terminal and to one of a plurality of ordinary input terminals so that in accordance with the resulting analog-digital input terminal voltage and ordinary input terminal voltage, a microcomputer discriminates the depressed key.
    Type: Grant
    Filed: October 20, 1987
    Date of Patent: October 3, 1989
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akinori Ohtsuka, Hitoshi Kurita, Yasutel Fujii