Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8164475 | Downhole communication | — | 2012-04-24 |
| 7806180 | Signalling systems and methods for communicating with a downhole location in a well installation | — | 2010-10-05 |
| 7554458 | Downhole communication | John Charles Guess | 2009-06-30 |
| 7460438 | Downhole data communication | — | 2008-12-02 |
| 7427452 | Operating electrolyte based components | Daniel Joinson | 2008-09-23 |
| 7315256 | Magnetic signalling in pipelines | Daniel Joinson | 2008-01-01 |
| 7102532 | Subsea communication | — | 2006-09-05 |
| 7071837 | Data transmission in pipeline systems | Daniel Joinson | 2006-07-04 |
| 6865139 | Subsea navigation and survey | — | 2005-03-08 |
| 6835291 | Anode monitoring and subsea pipeline power transmission | — | 2004-12-28 |
| 6788075 | Anode monitoring | — | 2004-09-07 |
| 6510106 | Systems and methods for locating subsurface objects | — | 2003-01-21 |
| 6469635 | Bore hole transmission system using impedance modulation | — | 2002-10-22 |
| 6262578 | Detection and location of current leakage paths and detection of oscillations | — | 2001-07-17 |
| 5587707 | Data transfer | Neil M. Dickie | 1996-12-24 |