Patents by Inventor Alain Quilgars

Alain Quilgars 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).

  • Apparatus for diamond deposition by microwave plasma-assisted CVPD
    Patent number: 5360485
    Abstract: Apparatus for depositing diamond on a substrate assisted by microwave plasma, comprising two zones, a plasma formation zone located in a waveguide and a diamond deposition zone located outside the waveguide. The apparatus includes means making it possible to form a stable plasma in the deposition zone, so as to considerably increase the substrate surface which can be treated.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: November 1, 1994
    Assignee: Pechiney Recherche
    Inventors: Pierre Bou, Lionel Vandenbulcke, Alain Quilgars, Michel Coulon, Michel Moisan