Patents by Inventor Jean M. Cerceau

Jean M. Cerceau 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 cutting element containing cubic boron nitride and method of making the same
    Patent number: 4906528
    Abstract: A cutting element of flat shape suitable for use as a drill tip comprises a central abrading blade containing more than 80% vol. CBN sandwiched between two lateral support layers. The lateral layers consist of a refractory metal or alloy selected from the group consisiting of tungsten, titanium and alloys thereof. The compact may particularly have a roof or pentagonal shape. An intermediate transition film may be located between the refractory metal or alloy and the CBN blade.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: March 6, 1990
    Assignee: Societe Industrielle De Combustible Nucleaire
    Inventors: Jean M. Cerceau, Yves Boyat