Patents by Inventor Zane D. Lockhart, Jr.

Zane D. Lockhart, Jr. 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 making cemented carbide substrate
    Patent number: 5650059
    Abstract: A carbide substrate including a binder prepared to receive a cutting material such as a diamond coating thereon. The substrate is immersed in an electrolyte solution with the substrate acting as the anode thereby providing for an electro-polished substrate surface. The electro-polished substrate surface is then etched to substantially remove the binder phase of the carbide substrate, the etching being to a depth of up to about 15 microns. The resulting surface is susceptible for receiving a coating of the diamond cutting material.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: July 22, 1997
    Assignee: Credo Tool Company
    Inventors: Carl Shumaker, Zane D. Lockhart, Jr., Oscar H. Miller