Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6966380 | Valves for use in wells | Eugene P. McLoughlin, Scott A. Rubinstein, Ricardo L. Martinez | 2005-11-22 |
| 6727828 | Pressurized system for protecting signal transfer capability at a subsurface location | David L. Malone, Christophe Rayssiguier, Michael Robert Johnson, Joseph Varkey | 2004-04-27 |
| 6668935 | Valve for use in wells | Eugene P. McLoughlin, Scott A. Rubinstein, Ricardo L. Martinez | 2003-12-30 |
| 6378610 | Communicating with devices positioned outside a liner in a wellbore | Chistophe M. Rayssiguier, Michael Robert Johnson, Ronald E. Pringle, John A. Booker | 2002-04-30 |
| 6092610 | Actively controlled rotary steerable system and method for drilling wells | Attilio Pisoni, Dimitrios Pirovolou, Spyro Kotsonis | 2000-07-25 |
| 5146433 | Mud pump noise cancellation system and method | David Malone, Peter Masak | 1992-09-08 |