Patents by Inventor Wilhelm P. Grotepass

Wilhelm P. Grotepass 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 wear resistant tools
    Patent number: 5376444
    Abstract: Diamond coated wear resistant articles particularly cutting tools such as surgical drills and burrs are coated with extremely hard coatings exhibiting compressive stress such as titanium nitride by means of physical vapor deposition to increase the wear resistance and, where applicable, the cutting performance of the article.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: December 27, 1994
    Inventors: Wilhelm P. Grotepass, Pieter W. DeLange