Patents by Inventor Shiochiro Nakamura

Shiochiro Nakamura 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).

  • Electrographic apparatus
    Patent number: 4649232
    Abstract: An electrographic apparatus and system utilizing a resistive layer having an active area which operates in conjunction with a stylus or tracer or other suitable position locator. An a.c. source or alternatively a signal treatment means is connected to the resistive layer through rows of electrodes. Improved accuracy is achieved through the use of electrodes at the ends of the electrode rows and through the use of an enhanced conductivity region which also allows the boundary of the active area to be placed in close proximity to the electrodes.
    Type: Grant
    Filed: June 7, 1985
    Date of Patent: March 10, 1987
    Assignee: Scriptel Corporation
    Inventors: Shiochiro Nakamura, Robert G. Kable