Patents by Inventor Donald Patrick Muth

Donald Patrick Muth 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).

  • Tubular Casing Member with Helical Threads
    Publication number: 20120073695
    Abstract: A drilling device for use in a wellbore may include a tubular casing member having an external surface, and a thread member positioned on the exterior surface of the tubular casing member. The thread member may form a spiral on the exterior surface of the tubular casing member. The thread member may have a pentagonal cross section. The thread member may have a pitched cross section. The thread member may have a triangular cross-section. The thread member may have a convex cross-section. The thread member may have a concave cross-section. The thread member may have a rectangular cross section.
    Type: Application
    Filed: September 29, 2010
    Publication date: March 29, 2012
    Inventor: Donald Patrick Muth