Patents by Inventor Harold Downham

Harold Downham 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).

  • Rotationally locked wear sleeve for through-tubing drilling and completion
    Patent number: 7624799
    Abstract: A protective sleeve can be inserted through tubing and latched in a manner that resists rotation. At the conclusion of the through tubing operation that involves rotational movement, the sleeve is withdrawn on the string that previously extended through it.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: December 1, 2009
    Assignee: Baker Hughes Incorporated
    Inventors: Morten Myhre, Jarle Haga, Arne Gunnar Larsen, Harold Downham
  • Rotationally locked wear sleeve for through-tubing drilling and completion
    Publication number: 20050161214
    Abstract: A protective sleeve can be inserted through tubing and latched in a manner that resists rotation.
    Type: Application
    Filed: January 25, 2005
    Publication date: July 28, 2005
    Inventors: Morten Myhre, Jarle Haga, Arne Larsen, Harold Downham