Patents by Inventor Mark A. Nash

Mark A. Nash 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).

  • Patent number: 4838404
    Abstract: A token and photo-detector circuitry in an electronic device used for supplying electrical power to an external appliance for an amount of time represented on the token. The token contains encoded information in a base numbering system in several regions of the token and this information is read by the circuitry to represent a time value whereby the circuit relays power to the appliance for an equivalent length of time. Several tokens may be deposited into the device in any orientation so as to accumulate time for use of the appliance. The device is programmable and can communicate with the user/operator with the appropriate hardware additions.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: June 13, 1989
    Assignee: West Virginia University
    Inventors: James E. Smith, Mark A. Nash