Patents by Inventor Jean Sionnet

Jean Sionnet 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).

  • Composite tool comprising a polycrystalline diamond active part
    Patent number: 4984642
    Abstract: The composite tool (1) comprises a sintered metal carbide support (2) and a polycrystalline diamond active part (3) having an inner surface (4) of metallurgical connection to the support (2) and an outwardly facing working surface (5). The working surface (5) comprises corrugations (7) which are substantially parallel to one another and form successive projecting zones (7) and hollow zone (8) on at leasst a part of the working surface (5). The composite tool is in particular intended for drilling to a great depth, such as drilling oil wells.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: January 15, 1991
    Assignee: Societe Industrielle de Combustible Nucleaire
    Inventors: Paul Renard, Jean Sionnet
  • Tool for a mine working machine comprising a diamond-charged abrasive component
    Patent number: 4944559
    Abstract: The body (1) of the tool consists of a single-piece steel component. The housing (3) for the composite abrasive component (2) is provided in this steel component. The working surface (5) of the body (1) has, at least in its component-holder part (5a), and angle at the lower vertex of at least 20% with respect to the angle at the vertex of the corresponding part (8a) of a metallic carbide tool for working the same rock. The surface (5a) of the component holder (4) is at least partially covered by an erosion layer (10) of hard material.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: July 31, 1990
    Assignee: Societe Industrielle de Combustible Nucleaire
    Inventors: Jean Sionnet, Paul A. Renard