Patents by Inventor Andrew M. Spradling

Andrew M. Spradling 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).

  • Tungsten Tetraboride Tooling
    Publication number: 20220307109
    Abstract: A method of forming cemented tungsten tetraboride, by combining tungsten and boron in a molar ratio of from about 1:6 to about 1:12, respectively, and firing the combined tungsten and boron in a hexagonal boron nitride crucible at a temperature of from about 1600 C to about 2000 C, to form tungsten tetraboride, milling the tungsten tetraboride to a powder, adding a metal binder to the tungsten tetraboride powder to produce a metal-tungsten tetraboride mixture, compressing the metal-tungsten tetraboride mixture, and sintering the compressed metal-tungsten tetraboride mixture to form cemented tungsten tetraboride.
    Type: Application
    Filed: June 6, 2022
    Publication date: September 29, 2022
    Applicant: Millennitek, LLC
    Inventors: Andrew M. Spradling, Lawrence W. Townsend, Kevin J. Hughes
  • Synthesis of tungsten tetraboride
    Patent number: 11351609
    Abstract: A method of forming tungsten tetraboride, by combining tungsten and boron in a molar ratio of from about 1:6 to about 1:12, respectively, and firing the combined tungsten and boron in the hexagonal boron nitride crucible at a temperature of from about 1600 C to about 2000 C, to form tungsten tetraboride.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: June 7, 2022
    Assignee: Millennitek LLC
    Inventors: Andrew M. Spradling, Lawrence W. Townsend
  • Synthesis of Tungsten Tetraboride
    Publication number: 20220016702
    Abstract: A method of forming tungsten tetraboride, by combining tungsten and boron in a molar ratio of from about 1:6 to about 1:12, respectively, and firing the combined tungsten and boron in the hexagonal boron nitride crucible at a temperature of from about 1600 C to about 2000C, to form tungsten tetraboride.
    Type: Application
    Filed: July 15, 2020
    Publication date: January 20, 2022
    Applicant: Millennitek, LLC
    Inventors: Andrew M. Spradling, Lawrence W. Townsend