Patents by Inventor Tobias D. Hartman

Tobias D. Hartman 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).

  • Perforating gun contact device
    Patent number: D873373
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: January 21, 2020
    Assignee: OSO Perforating, LLC
    Inventors: Tobias D. Hartman, Jeremy J. Ursi
  • Perforating gun contact ring
    Patent number: D877286
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: March 3, 2020
    Assignee: OSO Perforating, LLC
    Inventors: Tobias D. Hartman, Jeremy J. Ursi
  • Perforating gun contact device
    Patent number: D971372
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: November 29, 2022
    Assignee: OSO Perforating, LLC
    Inventors: Tobias D. Hartman, Jeremy J. Ursi