Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9617849 | Fluid pressure pulse generator with low and high flow modes for wellbore telemetry and method of using same | Aaron W. Logan, David A. Switzer, Justin C. Logan | 2017-04-11 |
| 9605535 | Integrated downhole system with plural telemetry subsystems | Aaron W. Logan, David A. Switzer, Justin C. Logan, Mingdong Xu | 2017-03-28 |
| 9574441 | Downhole telemetry signal modulation using pressure pulses of multiple pulse heights | Mingdong Xu, David A. Switzer, Aaron W. Logan | 2017-02-21 |
| 9528371 | Fluid pressure pulse generating apparatus and method of using same | David A. Switzer, Aaron W. Logan | 2016-12-27 |
| 9494035 | Fluid pressure pulse generator and method of using same | Aaron W. Logan, David A. Switzer, Justin C. Logan | 2016-11-15 |
| 9476297 | Telemetry systems with compensation for signal degradation and related methods | Aaron W. Logan, David A. Switzer | 2016-10-25 |
| 9464519 | Method and apparatus for detecting gamma radiation downhole | Aaron W. Logan, David A. Switzer, Mojtaba Kazemi Miraki | 2016-10-11 |
| 9435196 | Downhole electromagnetic and mud pulse telemetry apparatus | David A. Switzer, Aaron W. Logan, Mingdong Xu | 2016-09-06 |
| 9422809 | Fluid pressure pulse generator and method of using same | Aaron W. Logan, David A. Switzer, Justin C. Logan | 2016-08-23 |
| 9291049 | Downhole electromagnetic and mud pulse telemetry apparatus | David A. Switzer, Aaron W. Logan, Mingdong Xu | 2016-03-22 |
| 7462957 | Multi-conductor plug and socket apparatus | Paul L. Camwell, Wendall Siemens, Derek W. Logan | 2008-12-09 |