Patents by Inventor Cris Petersen

Cris Petersen 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).

  • Gray iron composition and brake components formed thereof
    Patent number: 5948353
    Abstract: Improved gray iron compositions comprise at least about 90 weight % iron, at least about 3.40 weight % carbon, from about 1 to 2.5 weight % silicon, from about 0.4 to 1.0 weight % manganese, and from about 0.02 to 0.07 weight % tin. Preferably, the gray iron compositions of the invention also include from about 0.2 to about 0.5 weight % chromium, and may further preferably include from about 0.25 to 0.75% molybdenum and/or from about 0.3 to 1.0% copper, and may optionally also include small amounts (less than about 1%) of such elements as titanium or vanadium, as examples. The gray iron compositions which may advantageously be used in the manufacture of vehicle brake components, especially the braking surfaces of vehicle brake drums or brake rotors.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: September 7, 1999
    Assignee: Hayes Lemmerz International, Inc.
    Inventors: Garth Lawrence, Cris Petersen, Paul Van Kooten, William Wolfe