Patents by Inventor Kevin Thomas Hufnagel

Kevin Thomas Hufnagel 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).

  • Oilfield hydration unit
    Patent number: D884749
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: May 19, 2020
    Assignee: Liberty Oilfield Services, LLC
    Inventors: Roy Aune, Jeffrey Brian Rother, Kevin Thomas Hufnagel
  • Oilfield blending unit
    Patent number: D931906
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: September 28, 2021
    Assignee: Liberty Oilfield Services LLC
    Inventors: Roy Aune, Jeffrey Brian Rother, Kevin Thomas Hufnagel
  • Oilfield frac pump
    Patent number: D971969
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: December 6, 2022
    Assignee: LIBERTY OILFIELD SERVICES LLC
    Inventors: Roy Aune, Jeffrey Brian Rother, Kevin Thomas Hufnagel