Patents by Inventor David Evans, III

David Evans, III 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 and system for communicating at a stadium event by altering the wave
    Patent number: 6046690
    Abstract: A method and system for communicating at an event produces a selected visual image related to the event by altering the wavelength of electromagnetic waves emanating from articles carried by a designated group of spectators at the event.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: April 4, 2000
    Inventor: David Evans, III