Issued Patents All Time
Showing 1–25 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7140238 | Method for determining the composition of a fluid | Yohan Bentolila, Abdelaziz Faraj, Michel Constant | 2006-11-28 |
| 6546810 | Process and device for measuring the velocity of flow of a fluid stream | Thierry Lepage | 2003-04-15 |
| 6356511 | Low distortion ratio hydrophone | Axelle Baroni, Georges Constantinou | 2002-03-12 |
| 6239877 | Polarized interferential measurement wherein the modulation signal is adjusted to be equal to the duration of the measurement window | — | 2001-05-29 |
| 5966408 | Method and device for regenerating by maxima detection, a clock signal punctuating the transmission of received digitized signals | Thierry Lepage | 1999-10-12 |
| 5639667 | Process and device for monitoring by periodic excitation a flow of particles in a pipe | François Heslot | 1997-06-17 |
| 5550785 | Mobile seismic system of great length for wells | Jean Laurent, Patrick Meynier, Jacques Cretin | 1996-08-27 |
| 5549008 | Device and method for characterizing a medium comprising at least a conductive part | Didier Frot, Pierre Gonzalez | 1996-08-27 |
| 5483344 | Process and apparatus for performing differential refractive index measurements using interference of modulated light beams passing through reference and test samples | Didier Frot, Pierre Gonzalez, Francois Couillard | 1996-01-09 |
| 5465270 | Process and device for the digitized transmission of signals | Patrick Coquerel | 1995-11-07 |
| 5426982 | Process and device for controlling a flow of particles in a pipe | Andre Buisson, Damien Gille | 1995-06-27 |
| 5363094 | Stationary system for the active and/or passive monitoring of an underground deposit | Philippe Staron, Jacques Cretin, Thierry Lepage | 1994-11-08 |
| 5243337 | Process and device for optimizing signal transmission rates on multifunctional well cables | Jacques Cretin, Daniel Saussier | 1993-09-07 |
| 5206835 | Modular device for reception, the acquisition and the transmission of seismic data with several multiplexing levels | — | 1993-04-27 |
| 5204843 | Integrated reception system of great length for sensing acoustic waves | — | 1993-04-20 |
| 5093660 | Acquisition method and device allowing to precisely digitize analog signals | — | 1992-03-03 |
| 5077698 | Method and device for the high-rate transmission of data following a quasi-asynchronous mode | — | 1991-12-31 |
| 4996675 | Signal sensor insensitive to static pressure variations | — | 1991-02-26 |
| 4990913 | Analog to digital converter for highly dynamic signals, using a variable reference voltage to floating decimal point output | — | 1991-02-05 |
| 4984222 | Piezoelectric sensor comprising at least one pair of flexible sensitive elements of great length | Etienne Bolze | 1991-01-08 |
| 4983925 | Signal sampling device for minimizing the errors effecting successively stored signal samples | — | 1991-01-08 |
| 4918666 | Tubular piezo-electric sensor with high sensitivity | Etienne Bolze | 1990-04-17 |
| 4849946 | Piezo-electric transducer comprising several coaxial sensitive elements | — | 1989-07-18 |
| 4810913 | Increased sensitivity piezoelectric hydrophones | Thierry Gautier | 1989-03-07 |
| 4801838 | Method and device for improving the sensitivity and the signal to noise ratio of piezo-electric transducers having a plurality of sensors combined in parallel | Thierry Gautier | 1989-01-31 |