Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7455106 | Polymer protective coated polymeric components for oilfield applications | Yanmei Li | 2008-11-25 |
| 7336474 | Microelectromechanical devices | Nolan C. Lerche, James E. Brooks | 2008-02-26 |
| 7219728 | Method and apparatus for generating downhole power | Thomas D. MacDougall | 2007-05-22 |
| 7154413 | Fused and sealed connector system for permanent reservoir monitoring and production control | Alan Baker, Harjit Kohli, Richard E. Mixon | 2006-12-26 |
| 7149339 | Non-destructive inspection of downhole equipment | — | 2006-12-12 |
| 7107188 | Digital pressure derivative method and program storage device | Jeff Spath | 2006-09-12 |
| 6886391 | Redundant metal-metal seal | Harjit Kohli, Hebah Ahmed | 2005-05-03 |
| 6811382 | Integrated pumping system for use in pumping a variety of fluids | Steven E. Buchanan, Grigory Arauz, Kenneth L. Havlinek, Ashley C. Kishino, Lawrence C. Lee +2 more | 2004-11-02 |
| 6768700 | Method and apparatus for communications in a wellbore | Robert Coon | 2004-07-27 |
| 6752397 | Redundant metal-metal seal | Harjit Kohli, Hebah Ahmed | 2004-06-22 |
| 6557650 | Method and apparatus for protecting explosives | Alfredo Fayard, Wenbo Yang | 2003-05-06 |
| 6386296 | Method and apparatus of protecting explosives | Manish Kothari, Wenbo Yang, Alfredo Fayard, Larry A. Behrmann, Jack F. Lands, Jr. +1 more | 2002-05-14 |
| 6310559 | Monitoring performance of downhole equipment | Guy Vachon Laborde, Gerald W. Robertson, Stephane Hiron, Bernard G. Juchereau | 2001-10-30 |
| 6138754 | Method and apparatus for use with submersible electrical equipment | Gerald W. Robertson | 2000-10-31 |
| 5948995 | Cross correlation fluid flow meter | Songming Huang | 1999-09-07 |
| 5837902 | Cross correlation fluid flow meter | Songming Huang | 1998-11-17 |
| 5521592 | Method and apparatus for transmitting information relating to the operation of a downhole electrical device | — | 1996-05-28 |
| 5174161 | Wireline and coiled tubing retrievable choke for downhole flow measurement | Andrew Hunt | 1992-12-29 |
| 4901069 | Apparatus for electromagnetically coupling power and data signals between a first unit and a second unit and in particular between well bore apparatus and the surface | — | 1990-02-13 |
| 4806928 | Apparatus for electromagnetically coupling power and data signals between well bore apparatus and the surface | — | 1989-02-21 |