Patents by Inventor John Theodore Fischer

John Theodore Fischer 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).

  • Photoconductor of cadmium selenide and aluminum oxide
    Patent number: 3947717
    Abstract: A low dark current photoconductive body includes an aluminum oxide overlayer on a cadmium selenide base layer. A transition region is provided at the interface region between the base layer and the overlayer and consists of a graded transition of cadmium and selenium with increasing amounts of aluminum and oxygen. An alternative body is disclosed omitting the overlayer. A blocking contact is provided within a portion of the body including the overlayer and/or the transition region.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: March 30, 1976
    Assignee: RCA Corporation
    Inventors: Charles John Busanovich, John Theodore Fischer, Robert Milton Moore, John A. VAN Raalte