Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8238194 | Methods and systems for compressing sonic log data | Peter Wu, Pierre Campanac, James Thompson, Anshuman Sinha | 2012-08-07 |
| 7643374 | Slowness-frequency projection display and animation | Thomas J. Plona | 2010-01-05 |
| 7603238 | Analysis of time-series data using singularities | Henri-Pierre Valero, Jean-Marie Degrange, Vivian Pisre, Karan Singh | 2009-10-13 |
| 7554882 | Methods and systems for calibrating acoustic receivers | Fernando Garcia-Osuna, Toru Ikegami, Vivian Pistre, Yoko Morikami | 2009-06-30 |
| 6509738 | Electromagnetic induction well logging instrument having azimuthally sensitive response | Gerald N. Minerbo, Brian Clark | 2003-01-21 |
| 6373248 | Nuclear magnetic resonance logging with azimuthal resolution | Martin E. Poitzsch, Peter Speier, Krishnamurthy Ganesan, Jaideva C. Goswami | 2002-04-16 |
| 6366089 | Nuclear magnetic resonance logging with azimuthal resolution | Martin E. Poitzsch, Peter Speier, Krishnamurthy Ganesan, Jaideva C. Goswami | 2002-04-02 |
| 6255817 | Nuclear magnetic resonance logging with azimuthal resolution | Martin E. Poitzsch, Peter Speier, Krishnamurthy Ganesan, Jaideva C. Goswami | 2001-07-03 |
| 6109372 | Rotary steerable well drilling system utilizing hydraulic servo-loop | Alain P. Dorel | 2000-08-29 |
| 5977768 | Nuclear magnetic resonance logging with azimuthal resolution | Abdurrahman Sezginer | 1999-11-02 |
| 5923167 | Pulsed nuclear magnetism tool for formation evaluation while drilling | Krishnamurthy Ganesan, Martin E. Poitzsch, Robert L. Kleinberg, Abdurrahman Sezginer | 1999-07-13 |
| 5852587 | Method of and apparatus for sonic logging while drilling a borehole traversing an earth formation | Sergio Kostek, Gordon McDaniel, Thomas J. Plona, Curtis Randall | 1998-12-22 |
| 5796677 | Method of sonic logging while drilling a borehole traversing an earth formation | Sergio Kostek, Gordon McDaniel, Thomas J. Plona, Curtis Randall, Jean Pierre Masson +2 more | 1998-08-18 |
| 5753812 | Transducer for sonic logging-while-drilling | Jeffrey B. Aron, Donald A. Klasel, Ting M. Lau | 1998-05-19 |
| 5594706 | Downhole processing of sonic waveform information | Ramachandra Shenoy | 1997-01-14 |
| 5331604 | Methods and apparatus for discrete-frequency tube-wave logging of boreholes | Chaur-Jian Hsu | 1994-07-19 |
| 5309404 | Receiver apparatus for use in logging while drilling | Sergio Kostek, Thomas J. Plona | 1994-05-03 |
| 5265067 | Methods and apparatus for simultaneous compressional, shear and Stoneley logging | — | 1993-11-23 |
| 5197038 | Method and sonic tool apparatus for investigating properties of earth formations transversed by a borehole | Michel Gouilloud | 1993-03-23 |
| 5077697 | Discrete-frequency multipole sonic logging methods and apparatus | — | 1991-12-31 |
| 4951267 | Method and apparatus for multipole acoustic logging | Benoit Froelich, Gyula Varga | 1990-08-21 |
| 4850450 | Logging tool housing with acoustic delay | David C. Hoyle, Gyula Varga | 1989-07-25 |
| 4703460 | Method and apparatus for acoustic dipole direct shear wave well logging | Andrew Kurkjian, Ann H. Everhart | 1987-10-27 |
| 4698792 | Method and apparatus for acoustic dipole shear wave well logging | Andrew Kurkjian | 1987-10-06 |