Patents by Inventor David P. Denboer

David P. Denboer 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).

  • Cutting elements with impact resistant diamond body
    Patent number: 11008815
    Abstract: Cutting elements include a diamond-bonded body attached with a substrate. The substrate has a coercivity of greater than about 200 Oe, and has a magnetic saturation of from about 73 to 90. The diamond-bonded body has a compressive stress at the surface of greater than about 0.9 GPa after heat treatment, and greater than about 1.2 GPa prior to heat treatment.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: May 18, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: John Daniel Belnap, Yi Fang, Michael David France, David P. DenBoer, Haibo Zhang
  • Assemblies for making superhard products by high pressure/high temperature processing
    Patent number: 10562000
    Abstract: Assemblies as disclosed herein for making superhard products by HPHT process comprise a first can portion for accommodating a mixture of materials therein and a second can mated with the first can portion. A leak-tight seal is provided between the first can portion and second can portion in a manner that accommodates the manufacture of relatively longer superhard products without having to change other elements or members used for HPHT processing to thereby provide improved manufacturing flexibility and cost efficiency.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: February 18, 2020
    Assignee: SMITH INTERNATIONAL, INC.
    Inventors: David P. DenBoer, Clint Hamilton, Michael David France, Ryan J. Davis, Lynn L. Belnap, Yi Fang
  • CUTTING ELEMENTS WITH IMPACT RESISTANT DIAMOND BODY
    Publication number: 20180216411
    Abstract: Cutting elements include a diamond-bonded body attached with a substrate. The substrate has a coercivity of greater than about 200 Oe, and has a magnetic saturation of from about 73 to 90. The diamond-bonded body has a compressive stress at the surface of greater than about 0.9 GPa after heat treatment, and greater than about 1.2 GPa prior to heat treatment.
    Type: Application
    Filed: July 20, 2016
    Publication date: August 2, 2018
    Inventors: John Daniel Belnap, Yi Fang, Michael David France, David P. DenBoer, Haibo Zhang
  • ASSEMBLIES FOR MAKING SUPERHARD PRODUCTS BY HIGH PRESSURE/HIGH TEMPERATURE PROCESSING
    Publication number: 20180043325
    Abstract: Assemblies as disclosed herein for making superhard products by HPHT process comprise a first can portion for accommodating a mixture of materials therein and a second can mated with the first can portion. A leak-tight seal is provided between the first can portion and second can portion in a manner that accommodates the manufacture of relatively longer superhard products without having to change other elements or members used for HPHT processing to thereby provide improved manufacturing flexibility and cost efficiency.
    Type: Application
    Filed: March 9, 2016
    Publication date: February 15, 2018
    Inventors: David P. DenBoer, Clint Hamilton, Michael David France, Ryan J. Davis, Lynn L. Belnap, Yi Fang
  • Process for manufacturing inserts with holes for clamping
    Patent number: 6120570
    Abstract: According to the present invention there is provided a method of making a cutting insert with a hole for clamping to a tool holder wherein a super-hard abrasive material is sintered and simultaneously bonded to a sintered cemented carbide body with a hole inside a container under elevated pressure and temperature conditions. During sintering the hole is filled with a plug which after sintering is removed.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: September 19, 2000
    Assignees: Smith International, Sandvik Atibolag
    Inventors: Scott M. Packer, Peter Littecke, David P. Denboer