Patents by Inventor Francis Porret

Francis Porret 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).

  • Electro-luminescent diode
    Patent number: 4038580
    Abstract: An electro-luminescent diode having a luminous surface which is defined by a thinned portion comprising zones with emitting junctions, the zones occupying only a portion of the luminous surface. The composition of the thinned portion allows multiple reflection of light to occur and enables light generated in the diode and totally internally reflected to be reflected back from a diffusing reflector to emerge and increase the intensity of light efficiency of the diode.
    Type: Grant
    Filed: August 26, 1975
    Date of Patent: July 26, 1977
    Assignee: Centre Electronique Horloger S.A.
    Inventor: Francis Porret