Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7201230 | Hydraulic control and actuation system for downhole tools | Roger L. Schultz, Melissa Allin, Paul D. Ringgenberg, Vincent P. Zeller, Tyler T. Trinh +1 more | 2007-04-10 |
| 7068183 | Drill string incorporating an acoustic telemetry system employing one or more low frequency acoustic attenuators and an associated method of transmitting data | Vimal V. Shah, Eugene Linyaev, Wallace R. Gardner, Paul F. Rodney | 2006-06-27 |
| 6880634 | Coiled tubing acoustic telemetry system and method | Wallace R. Gardner, Vimal V. Shah, Hampton Fowler, Jr., Leonard R. Case | 2005-04-19 |
| 6583729 | High data rate acoustic telemetry system using multipulse block signaling with a minimum distance receiver | Wallace R. Gardner, Vimal V. Shah | 2003-06-24 |
| 6470996 | Wireline acoustic probe and associated methods | Vimal V. Shah | 2002-10-29 |
| 6137747 | Single point contact acoustic transmitter | Vimal V. Shah, James R. Birchak, John W. Minear, Wallace R. Gardner, John Dennis +3 more | 2000-10-24 |
| 5490564 | Pressure change signals for remote control of downhole tools | Roger L. Schultz, Neal G. Skinner | 1996-02-13 |
| 5355960 | Pressure change signals for remote control of downhole tools | Roger L. Schultz, Neal G. Skinner | 1994-10-18 |
| H1289 | Borehole televiewer system depth monitoring and recording system | — | 1994-02-01 |
| 5204673 | Borehole televiewer system depth encoding and decoding method | William P. Goodwill | 1993-04-20 |
| 5099236 | Borehole televiewer system depth encoding and decoding method | William P. Goodwill | 1992-03-24 |
| 4930109 | Method and apparatus of measuring ultrasonic time travel information obtained from logging operations in a well borehole | — | 1990-05-29 |
| 4899144 | Method of transmitting ultrasonic amplitude & time travel information over a logging cable | — | 1990-02-06 |
| 4897646 | Method and apparatus for reducing the effective bandwidth of ultrasonic waveform for transmission over a logging cable | William P. Goodwill | 1990-01-30 |
| 4891641 | Method for transmitting data over logging cable | Michael F. Gard | 1990-01-02 |