Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8128281 | Fluid level indication system and technique | Maxwell Richard Hadley | 2012-03-06 |
| 8077314 | Measuring a characteristic of a multimode optical fiber | Arthur H. Hartog, Graeme Hilton, Gareth Lees | 2011-12-13 |
| 7731421 | Fluid level indication system and technique | Maxwell Richard Hadley | 2010-06-08 |
| 7668411 | Distributed vibration sensing system using multimode fiber | Arthur H. Hartog, Kamal Kader | 2010-02-23 |
| 7472594 | Fluid level indication system and technique | — | 2009-01-06 |
| 6255818 | Method and apparatus for performing magnetic resonance measurements | Nicholas J. Heaton, M. Reza Taherian, Boqin Sun, Abdurrahman Sezginer | 2001-07-03 |
| 5426368 | Logging method and apparatus for investigating geometrical characteristics of a borehole and for investigating formation resistivity | Dominique Benimeli, Jan W. Smits, Jacque R. Tabanou | 1995-06-20 |
| 5343153 | Well logging method and apparatus using passive azimuthal electrodes | Pierre Petit | 1994-08-30 |
| 5268641 | Logging method and apparatus for measuring the Grondingen effect-corrected resistivity of earth formations | Jean-Claude Trouiller | 1993-12-07 |
| 4857831 | Borehole casing diagnostic apparatus and method | Jiro Takeda | 1989-08-15 |
| 4794322 | Method, system, and tool for investigating borehole casings | — | 1988-12-27 |