Patents by Inventor Donald Stuart Stroud

Donald Stuart Stroud 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).

  • Downhole cutting tool, cutting elements and method
    Patent number: 8662208
    Abstract: A cutting tool that has a leading or cutting surface that includes affixed thereto a plurality of irregular nine-faced polyhedrons or three-dimensional solid elements with nine faces, wherein each of the nine faces is a polygon and has a predetermined distance from each face to an opposing cutting edge and wherein the predetermined distance from each of the nine faces to its opposing cutting edge is equal for all of each of the nine faces, such that regardless of which of the nine faces is resting on a flat surface, the predetermined distance is the same.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: March 4, 2014
    Assignee: American National Carbide Co.
    Inventors: Donald Stuart Stroud, Donald Gregory Stroud
  • DOWNHOLE CUTTING TOOL, CUTTING ELEMENTS AND METHOD
    Publication number: 20110308865
    Abstract: A cutting tool that has a leading or cutting surface that includes affixed thereto a plurality of irregular nine-faced polyhedrons or three-dimensional solid elements with nine faces, wherein each of the nine faces is a polygon and has a predetermined distance from each face to an opposing cutting edge and wherein the predetermined distance from each of the nine faces to its opposing cutting edge is equal for all of each of the nine faces, such that regardless of which of the nine faces is resting on a flat surface, the predetermined distance is the same.
    Type: Application
    Filed: January 25, 2011
    Publication date: December 22, 2011
    Applicant: AMERICAN NATIONAL CARBIDE CO.
    Inventors: Donald Stuart Stroud, Donald Gregory Stroud