Patents by Inventor Helene Brandrup-Wognsen

Helene Brandrup-Wognsen 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).

  • Diamond coated body
    Patent number: 5543210
    Abstract: There is now provided a body of cemented carbide, Si.sub.3 N.sub.4 or another ceramic material, coated by at least one CVD or PVD diamond or cBN layer with a chromium nitride, chromium carbide or chromium carbonitride layer. The chromium-containing layer is outside the diamond layer which in the case of more than one diamond layer is the outermost diamond layer of the coating. Improved machining properties are obtained.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: August 6, 1996
    Assignee: Sandvik AB
    Inventors: Gregor Kullander, Ingrid Reineck, Helene Brandrup-Wognsen