Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484800 | Downhole flow control devices | Kevin R. Jones, Robert Coon, Douglas J. Murray, Mark E. Hopmann, Steven L. Jennings +1 more | 2002-11-26 |
| 6450255 | Downhole flow control devices | Kevin R. Jones, Robert Coon, Douglas J. Murray, Mark E. Hopmann, Steven L. Jennings +1 more | 2002-09-17 |
| 6334486 | Downhole flow control devices | Kevin R. Jones, Robert Coon, Douglas J. Murray, Mark E. Hopmann, Steven L. Jennings +1 more | 2002-01-01 |
| 6260616 | Downhole flow control devices | Kevin R. Jones, Robert Coon, Douglas J. Murray, Mark E. Hopmann, Steven L. Jennings +1 more | 2001-07-17 |
| 6173788 | Wellpacker and a method of running an I-wire or control line past a packer | Jeffrey J. Lembcke | 2001-01-16 |
| 6041857 | Motor drive actuator for downhole flow control devices | Kevin R. Jones, Robert Coon, Douglas J. Murray, Mark E. Hopmann, Steven L. Jennings +3 more | 2000-03-28 |
| 5906238 | Downhole flow control devices | Kevin R. Jones, Robert Coon, Douglas J. Murray, Mark E. Hopmann, Steven L. Jennings +1 more | 1999-05-25 |
| 5896924 | Computer controlled gas lift system | Robert Coon, James H. Kritzler, Brian A. Roth, Terry R. Bussear, Bruce E. Weightman | 1999-04-27 |
| 5832996 | Electro hydraulic downhole control device | Kevin R. Jones, Robert Coon, Douglas J. Murray, Mark E. Hopmann, Steven L. Jennings | 1998-11-10 |
| 4981177 | Method and apparatus for establishing communication with a downhole portion of a control fluid pipe | Erik P. Eriksen, Lars Vinje | 1991-01-01 |
| 4944351 | Downhole safety valve for subterranean well and method | Erik P. Eriksen, Brian Keith Drakeley | 1990-07-31 |
| 4796705 | Subsurface well safety valve | Jefferey J. Lembcke | 1989-01-10 |
| 4503913 | Subsurface well safety valve | — | 1985-03-12 |
| 4457376 | Flapper type safety valve for subterranean wells | Michael L. Cognevicy | 1984-07-03 |
| 4427071 | Flapper type safety valve for subterranean wells | — | 1984-01-24 |
| 4415036 | Pressure equalizing flapper type safety valve for subterranean wells | Michael L. Cognevich | 1983-11-15 |
| 4411316 | Subterranean well valve with lock open mechanism | — | 1983-10-25 |
| 4356867 | Temporary lock-open tool for subterranean well valve | — | 1982-11-02 |
| 4295528 | Selective lock with setting and retrieving tools | — | 1981-10-20 |