Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11899036 | Methodology for annular solids and fluids differentiation through integration of shear and flexural ultrasonic acoustic waves | Sebastien Kamgang, Douglas J. Patterson, Joseph Olaiya, Baoyan Li, Muhammad A. Manzar | 2024-02-13 |
| 11397081 | Method and apparatus for determining a tubular thickness using a pulse echo waveform signal | — | 2022-07-26 |
| 9804288 | Real-time, limited orientation sensor auto-calibration | Robert A. Estes, Randy R. Riggs, Francis Chad Hanak | 2017-10-31 |
| 8040755 | Wired pipe depth measurement system | — | 2011-10-18 |
| 5983163 | Method for computing dip of earth formations from wellbore image data | Charles Carter Waid | 1999-11-09 |
| 5777737 | Apparatus and method for processing signals output from fiber optic rate gyroscope having 3.times.3 coupler | — | 1998-07-07 |
| 5737277 | Method for computing borehole geometry from ultrasonic pulse echo data | — | 1998-04-07 |
| 5644550 | Method for logging behind casing | — | 1997-07-01 |
| 5640371 | Method and apparatus for beam steering and bessel shading of conformal array | Mathew G. Schmidt | 1997-06-17 |
| 5638337 | Method for computing borehole geometry from ultrasonic pulse echo data | — | 1997-06-10 |
| 5636022 | Closed loop unmodulated fiber optic rate gyroscope with 3.times.3 coupler and method | — | 1997-06-03 |
| 5541587 | System for determining the true depth of an electrical logging tool within a wellbore | — | 1996-07-30 |
| 5541889 | Borehole fluid replacement means and method | Mathew G. Schmidt, Roger R. Steinsiek, Paul G. Junghans | 1996-07-30 |
| 5491668 | Method for determining the thickness of a casing in a wellbore by signal processing pulse-echo data from an acoustic pulse-echo imaging tool | — | 1996-02-13 |
| 5486921 | Optimum coupler configuration for fiber optic rate gyroscope using [3.times.] coupler | — | 1996-01-23 |
| 5444324 | Mechanically amplified piezoelectric acoustic transducer | Mathew G. Schmidt | 1995-08-22 |
| 5390271 | Optical interface for hybrid circuit | — | 1995-02-14 |