Patents by Inventor Bradley J. Head

Bradley J. Head 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).

  • Drill bit having geometrically sharp inserts
    Patent number: 9212523
    Abstract: A drill bit configured for boring holes or wells into the earth, the drill bit having a face and a plurality of zones, the drill bit having geometrically sharp inserts located in an inner zone and non-geometrically sharp inserts located in an outer zone.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: December 15, 2015
    Assignee: Smith International, Inc.
    Inventors: Zhou Yong, Weiqi Yin, Bradley J. Head
  • DRILL BIT HAVING GEOMETRICALLY SHARP INSERTS
    Publication number: 20130140093
    Abstract: A drill bit configured for boring holes or wells into the earth, the drill bit having a face and a plurality of zones, the drill bit having geometrically sharp inserts located in an inner zone and non-geometrically sharp inserts located in an outer zone.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 6, 2013
    Applicant: Smith International, Inc.
    Inventors: Yong Zhou, Weiqi Yin, Bradley J. Head