Patents by Inventor Michael S. Damschen

Michael S. Damschen 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).

  • HYBRID DRILL BIT AND DESIGN METHOD
    Publication number: 20090126998
    Abstract: A hybrid earth-boring bit comprising a bit body having a central axis, at least one, preferably three fixed blades, depending downwardly from the bit body, each fixed blade having a leading edge, and at least one rolling cutter, preferably three rolling cutters, mounted for rotation on the bit body. A rolling cutter is located between two fixed blades.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 21, 2009
    Inventors: Anton F. Zahradnik, Rudolf Carl Pessier, Don Q. Nguyen, Matthew J. Meiners, Karlos B. Cepeda, Michael S. Damschen, Mark P. Blackman, Jack T. Oldham, Ronny D. McCormick