Patents by Inventor Roger A. Baillargeon

Roger A. Baillargeon 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).

  • Method of machining using coated cutting tools
    Patent number: 5325747
    Abstract: Provided is a coated cutting tool having a coating and a substrate. The coating includes at least one CVD layer which may have a residual tensile stress and at least one layer having a high residual compressive stress. The outermost layer of the coating is preferably the one containing residual compressive stresses. The substrate is a composite having hard refractory grains. The cutting tool has been found to be particularly useful in the machining of titanium alloys and superalloys.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: July 5, 1994
    Assignee: Kennametal Inc.
    Inventors: Anakkavur T. Santhanam, Rajendra V. Godse, Dennis T. Quinto, Kenneth E. Undercoffer, Prem C. Jindal, Roger A. Baillargeon, William D. Ewald