Patents by Inventor Francois Chevoir

Francois Chevoir 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).

  • Assymetric quantum well infrared detector
    Patent number: 5355000
    Abstract: An electromagnetic wave detector has several stacks of layers of semiconducting materials. Each stack constitutes an asymmetrical quantum well with stepped barrier and has two energy levels, one of which is located beneath the energy level of the intermediate barrier step while the other is located above it. Means are used to apply an electric field to the structure.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: October 11, 1994
    Assignee: Thomson-CSF
    Inventors: Dominique Delacourt, Michel Papuchon, Francois Chevoir