Patents by Inventor Roger Grilloud

Roger Grilloud 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 producing a surface layer on a metallic workpiece
    Patent number: 5224997
    Abstract: The surface of a workpiece is provided with a surface layer. Initially, the workpiece is inductively heated by a HF/MF generator to a first temperature and subsequently heated further by a laser beam with coating material being applied to the region of the laser beam in an amount sufficient to form a surface layer on the workpiece. The generator and the laser source are able to operate simultaneously to effect a high quality surface layer of relatively thin thickness.
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: July 6, 1993
    Assignees: Sulzer Brothers Limited, Amysa-Yverdon, S.A.
    Inventors: Roger Grilloud, Denis Gonseth, Roger Dekumbis