Patents by Inventor National Oilwell DHT, L.P.

National Oilwell DHT, L.P. 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).

  • Preparation of Nanocrystalline Diamond Coated Diamond Particles and Applications Thereof
    Publication number: 20130180181
    Abstract: A method of making a polycrystalline diamond cutter element includes forming a blend, comprising a first particle size of polycrystalline diamond particles and a second particle size of polycrystalline diamond particles; forming a suspension of nanocrystalline diamond particles suspended in a solvent; and mixing the blend into the suspension to form a polycrystalline diamond mixture comprising nanocrystalline diamond coated polycrystalline diamond particles. The mixture is sintered with a substrate at high temperature and high pressure to form the polycrystalline diamond cutter element.
    Type: Application
    Filed: January 16, 2013
    Publication date: July 18, 2013
    Applicant: National Oilwell DHT, L.P.
    Inventor: National Oilwell DHT, L.P.