Patents by Inventor Michael Heyman

Michael Heyman 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).

  • Electrochromic display device
    Patent number: 3981560
    Abstract: An electrochromic display device includes an electrolyte and at least one transparent electrically conductive electrode. An organic insulating layer e.g. a photoresist material, is disposed between the transparent electrode and the electrolyte such that no portion of the transparent electrode is in contact with the electrolyte. The insulating layer protects the transparent electrode from deterioration so as to increase the lifetime of the transparent electrode.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: September 21, 1976
    Assignee: RCA Corporation
    Inventors: Philip Michael Heyman, Robert Leon Quinn, Istvan Gorog