Patents by Inventor Alan Willis

Alan Willis 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 having enhanced night viewability
    Patent number: 4214820
    Abstract: A plurality of self-luminous light sources, each preferably comprising a transparent shell, a radioactive material encapsulated in the shell, and a radioluminescent material coated on the shell, are incorporated in the ion-conducting layer of an electrochromic display at selected locations behind the image-forming electrochromic segments to provide sufficient back lighting for enhanced night viewability of the display elements.
    Type: Grant
    Filed: September 15, 1978
    Date of Patent: July 29, 1980
    Assignee: Timex Corporation
    Inventors: Marshall Leibowitz, Alan Willis, Douglas George