Patents by Inventor Jacques Donjon

Jacques Donjon 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).

  • Optical image converting relay having an electro-optical element and a photoconductive element
    Patent number: 4002902
    Abstract: In an optic relay device having a memory the image to be treated is projected on a photoconductive element and is transformed into a charge image stored in a memory in the proximity of a plate of electro-optical material brought at its Curie point.The electro-optical material and the photoconductive element are such that the Curie temperature of the electro-optical material is near the temperature of the maximum sensitivity of the photoconductor.
    Type: Grant
    Filed: January 7, 1975
    Date of Patent: January 11, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Jacques Donjon, Michel Grenot, Jean-Pierre Hazan