Patents by Inventor Benoit Deveaud

Benoit Deveaud 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-optical semiconductor device and a method of emitting light
    Patent number: 4821274
    Abstract: An electro-optical device using a doped semiconductor medium under conditions of controlled excitation energy. The semiconductor medium is a doped binary, ternary or quaternary semiconductor alloy, namely, an III-V semiconductor alloy having at least one element from column III, and at least one element from column V of the Periodic Table, and doped with vanadium, titanium or niobium. Such an electro-optical device may be made into a laser or into a light emitting diode.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: April 11, 1989
    Assignees: Centre National de la Recherche Scientifique, Etat Francais Represente Par Le Ministre Des Ptt
    Inventors: Claude Naud, Gerard Guillot, Benoit Deveaud, Bernard Clerjaud
  • Saturatable absorbant with very short switching times
    Patent number: 4720309
    Abstract: This absorbant is of the type formed by superlattice constituted by a stack of films of two different semiconductor materials having gaps of different heights. Thus, a potential well is produced in each film corresponding to the semiconductor with the smallest gap and a potential barrier in each film corresponding to the semiconductor with the largest gap. This saturatable absorbant is characterized in that the films corresponding to the semiconductor with the smallest gap have a thickness, which can assume two values, one small and the other large.Application in optics to the production of mode locking lasers and all optical logic gates.
    Type: Grant
    Filed: July 9, 1986
    Date of Patent: January 19, 1988
    Inventors: Benoit Deveaud, Andre Chomette, Andre Regreny