Patents by Inventor James U. Nixon

James U. Nixon 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).

  • PCD cutters with improved strength and thermal stability
    Patent number: 9394747
    Abstract: A thermally stable polycrystalline diamond cutter and method for fabricating the same. The cutter includes a substrate and a cutting table bonded thereto. The cutting table includes a cutting surface, a first beveled edge, a second beveled edge, a side surface, and an opposing surface that is adjacent to the substrate. The first beveled edge extends outwardly at a first angle from the cutting surface towards the substrate. The second beveled edge extends outwardly at a second angle from the first beveled edge towards the substrate. The side surface extends from the second beveled edge to the opposing surface. The cutting table is formed from a polycrystalline diamond structure having interstitial spaces disposed therebetween and a catalyst material disposed within the spaces in an untreated layer and not within a treated layer. The untreated layer includes the entire side surface.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: July 19, 2016
    Assignee: VAREL INTERNATIONAL IND., L.P.
    Inventors: Federico Bellin, William W. King, James U. Nixon
  • PCD CUTTERS WITH IMPROVED STRENGTH AND THERMAL STABILITY
    Publication number: 20130333954
    Abstract: A thermally stable polycrystalline diamond cutter and method for fabricating the same. The cutter includes a substrate and a cutting table bonded thereto. The cutting table includes a cutting surface, a first beveled edge, a second beveled edge, a side surface, and an opposing surface that is adjacent to the substrate. The first beveled edge extends outwardly at a first angle from the cutting surface towards the substrate. The second beveled edge extends outwardly at a second angle from the first beveled edge towards the substrate. The side surface extends from the second beveled edge to the opposing surface. The cutting table is formed from a polycrystalline diamond structure having interstitial spaces disposed therebetween and a catalyst material disposed within the spaces in an untreated layer and not within a treated layer. The untreated layer includes the entire side surface.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 19, 2013
    Applicant: Varel International Ind., L.P.
    Inventors: Federico Bellin, William W. King, James U. Nixon