Patents by Inventor Appleton Danforth Cope

Appleton Danforth Cope 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).

  • Low dark current photoconductive device
    Patent number: 3987327
    Abstract: A photoconductive body of antimony trisulfide is coated on one surface with a layer of an insulating material having particles of a conductive metal dispersed throughout. When used as a target for a vidicon type camera tube, the metal particle-containing insulating layer lowers the dark current of the tube without affecting the photocurrent or spectral response.
    Type: Grant
    Filed: January 2, 1975
    Date of Patent: October 19, 1976
    Assignee: RCA Corporation
    Inventors: Christopher Roman Wronski, Appleton Danforth Cope, Benjamin Abeles