Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6289596 | Downhole tool | Charles Anderson | 2001-09-18 |
| 6279670 | Downhole flow pulsing apparatus | Ronnie Hardie | 2001-08-28 |
| 5727641 | Articulated directional drilling motor assembly | Warren Askew | 1998-03-17 |
| 5617926 | Steerable drilling tool and system | Spryo J. Kotsonis | 1997-04-08 |
| 5542482 | Articulated directional drilling motor assembly | — | 1996-08-06 |
| 5529133 | Steerable drilling tool and system | — | 1996-06-25 |
| 5520256 | Articulated directional drilling motor assembly | — | 1996-05-28 |
| 5484029 | Steerable drilling tool and system | — | 1996-01-16 |
| 5311952 | Apparatus and method for directional drilling with downhole motor on coiled tubing | Lawrence J. Leising, Charles Ingold | 1994-05-17 |
| 5181576 | Downhole adjustable stabilizer | Warren Askew | 1993-01-26 |
| 5139094 | Directional drilling methods and apparatus | Bernhard Prevedel, Warren Askew | 1992-08-18 |