Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9140083 | Hydraulically triggered anchor | Ruben Sanchez | 2015-09-22 |
| 6923274 | Retrievable pre-milled window with deflector | Ken Dale Rodgers, Mark C. Glaser, Doug Durst, Mike Johnson, Mark Ryan | 2005-08-02 |
| 6715567 | Apparatus and method for forming a pilot hole in a formation | Ken Winterrowd, Shane P. Hart | 2004-04-06 |
| 6094743 | Deflector-arm protector | — | 2000-08-01 |
| 5887655 | Wellbore milling and drilling | David M. Haugen, William A. Blizzard, Jr., Mark W. Schnitker, Thurman B. Carter, John D. Roberts +4 more | 1999-03-30 |
| 5887668 | Wellbore milling-- drilling | David M. Haugen, Frederick T. Tilton, Joseph Mills, Randy P. Hutchings, Guy L. McClung, III | 1999-03-30 |
| 5791417 | Tubular window formation | David M. Haugen, Guy L. McClung, III, Mark W. Schnitker, Shane P. Hart | 1998-08-11 |
| 5584350 | Wellbore sidetracking methods | Mark W. Schnitker, Shane P. Hart | 1996-12-17 |
| 5072795 | Pressure compensator for drill bit lubrication system | Robert J. Kotch, Frank Hall | 1991-12-17 |