Patents by Inventor John D. Holodnak

John D. Holodnak 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).

  • Electronic releasing mechanism
    Patent number: 11136866
    Abstract: A releasable tool using an electronic motor to drive a differential to engage or release a quick change sub that may be coupled to additional downhole tools, such as a perforating gun string.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: October 5, 2021
    Assignee: Hunting Titan, Inc.
    Inventors: John D. Holodnak, Garrett M. Hohmann, Santos D. Ortiz, Gene McBride, Sridhar Rajaram, George King
  • Electronic release tool
    Patent number: 10975650
    Abstract: A releasable tool using an electronic motor to drive a collet and associated collet arms to engage or release a quick change sub that may be coupled to additional downhole tools, such as a perforating gun string.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: April 13, 2021
    Assignee: Hunting Titan, Inc.
    Inventors: John D. Holodnak, Garrett M. Hohmann, Santos D. Ortiz, Gene McBride, Sridhar Rajaram, George King
  • Electronic releasing mechanism
    Publication number: 20200248536
    Abstract: A releasable tool using an electronic motor to drive a differential to engage or release a quick change sub that may be coupled to additional downhole tools, such as a perforating gun string.
    Type: Application
    Filed: February 23, 2018
    Publication date: August 6, 2020
    Applicant: Hunting Titan, Inc.
    Inventors: John D. Holodnak, Garrett M. Hohmann, Santos D. Ortiz, Gene McBride, Sridhar Rajaram, George King
  • Electronic release tool
    Publication number: 20190338612
    Abstract: A releasable tool using an electronic motor to drive a collet and associated collet arms to engage or release a quick change sub that may be coupled to additional downhole tools, such as a perforating gun string.
    Type: Application
    Filed: December 14, 2017
    Publication date: November 7, 2019
    Applicant: Hunting Titan, Inc.
    Inventors: John D. Holodnak, Garrett M. Hohmann, Santos D. Ortiz, Gene McBride, Sridhar Rajaram, George King
  • Wireline swivel and method of use
    Patent number: 5468153
    Abstract: A rotatable electrical connector or swivel is used in a substantially vertical subterranean portion of a drill string within a drill pipe. The swivel has an enclosed oil filled chamber having a first shaft concentrically mounted therein. The first shaft protrudes from the chamber and is electrically connected to one end of a wireline which is used for electrical connection between the surface and instruments located downhole. Within the interior of the oil filled chamber the first shaft is attached to a first member disposed within the complementary surface of a second member concentrically aligned with the first member. The second member includes a second shaft which protrudes from the oil filled chamber and is connected to the other end of the wireline. One of the two shafts is rotatably mounted in bearing within the chamber so that the complementary surfaces of the first and second members are in the relationship of a rotor and stator.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: November 21, 1995
    Assignee: Drilling Measurements, Inc.
    Inventors: Robert L. Brown, John D. Holodnak, Gene McBride, Demmie L. Mosley