Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7489591 | Drilling fluid pressure pulse detection using a differential transducer | — | 2009-02-10 |
| 5672971 | Well logging system arranged for stable, high-sensitivity reception of propagating electromagnetic waves | Richard A. Meador, James E. Meisner, Ronald A. Hall, Larry W. Thompson | 1997-09-30 |
| 5563512 | Well logging apparatus having a removable sleeve for sealing and protecting multiple antenna arrays | — | 1996-10-08 |
| 5402068 | Method and apparatus for logging-while-drilling with improved performance through cancellation of systemic errors through combination of signals, utilization of dedicated transmitter drivers, and utilization of selected reference signals | Richard A. Meador, James E. Meisner, Ronald A. Hall, Larry W. Thompson | 1995-03-28 |
| 5115415 | Stepper motor driven negative pressure pulse generator | Kevin J. Shinneman | 1992-05-19 |
| 5081419 | High sensitivity well logging system having dual transmitter antennas and intermediate series resonant | Richard A. Meador, James E. Meisner, Ronald A. Hall, Larry W. Thompson | 1992-01-14 |
| 5061849 | Externally mounted radioactivity detector for MWD employing radial inline scintillator and photomultiplier tube | James E. Meisner, Vernon E. Groeschel | 1991-10-29 |
| 4904865 | Externally mounted radioactivity detector for MWD | James E. Meisner, Roger L. Tresler, Micheal D. Robie | 1990-02-27 |
| 4699352 | Apparatus for well logging telemetry | — | 1987-10-13 |
| 4550392 | Apparatus for well logging telemetry | — | 1985-10-29 |
| 4405021 | Apparatus for well logging while drilling | — | 1983-09-20 |
| 4386422 | Servo valve for well-logging telemetry | John D. Jeter | 1983-05-31 |