Patents by Inventor Michael Gratzinger

Michael Gratzinger 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).

  • Telescoping slip joint assembly
    Patent number: 9856704
    Abstract: A slip joint assembly that is usable with a well includes first, second and third tubular housing sections; and first and second mandrels. The first tubular housing section is adapted to connect to a first tubing string segment; the second tubular housing section is adapted to connect to a second tubing string segment; the third tubular housing section disposed between the first and second tubular housing sections; the first mandrel forms a slidable connection with the first tubular housing section; and the second mandrel forms a slidable connection with the second tubular housing section.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: January 2, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Edgar Jose Montiel, Michael Gratzinger
  • TELESCOPING SLIP JOINT ASSEMBLY
    Publication number: 20160084019
    Abstract: A slip joint assembly that is usable with a well includes first, second and third tubular housing sections; and first and second mandrels. The first tubular housing section is adapted to connect to a first tubing string segment; the second tubular housing section is adapted to connect to a second tubing string segment; the third tubular housing section disposed between the first and second tubular housing sections; the first mandrel forms a slidable connection with the first tubular housing section; and the second mandrel forms a slidable connection with the second tubular housing section.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 24, 2016
    Inventors: Edgar Montiel, Michael Gratzinger