Patents by Inventor Masumi Nishikata

Masumi Nishikata 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).

  • Method of manufacturing a keyboard
    Patent number: 4143179
    Abstract: A method for manufacturing a keyboard which can be utilized in a keying structure is described. It consists of layering a flat fixed plate with a conductive paint, masking a preformed insulating rubber keyboard, laying the keyboard on the conductive paint surface and thereafter applying pressure to the rubber keyboard to the extent that certain portions of the rubber keyboard are put in contact with the conductive paint.
    Type: Grant
    Filed: December 16, 1974
    Date of Patent: March 6, 1979
    Assignee: Fuji Polymer Industries, Co., Ltd.
    Inventors: Masumi Nishikata, Kiyoshi Tsugawa