Issued Patents All Time
Showing 76–92 of 92 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9714569 | Mud pulse telemetry apparatus with a pressure transducer and method of operating same | Aaron W. Logan, Jili Liu, David A. Switzer | 2017-07-25 |
| 9670771 | Methods and apparatus for generating electromagnetic telemetry signals | Aaron W. Logan, Daniel W. Ahmoye, David A. Switzer, Patrick R. Derkacz, Mojtaba Kazemi Miraki | 2017-06-06 |
| 9670774 | Fluid pressure pulse generator for a downhole telemetry tool | Gavin Gaw-Wae Lee, Aaron W. Logan | 2017-06-06 |
| 9644471 | Mounting and component holder apparatuses and assemblies for holding rigid components | Aaron W. Logan, Jili Liu, David A. Switzer | 2017-05-09 |
| 9631487 | Fluid pressure pulse generator for a downhole telemetry tool | Gavin Gaw-Wae Lee, Aaron W. Logan | 2017-04-25 |
| 9631488 | Fluid pressure pulse generator for a downhole telemetry tool | Gavin Gaw-Wae Lee, Aaron W. Logan | 2017-04-25 |
| 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, Jili Liu | 2017-04-11 |
| 9605535 | Integrated downhole system with plural telemetry subsystems | Aaron W. Logan, David A. Switzer, Jili Liu, Mingdong Xu | 2017-03-28 |
| 9587441 | Apparatus and method for coaxially joining components to resist relative rotational and longitudinal movement | Aaron W. Logan, David A. Switzer, Patrick R. Derkacz, Daniel W. Ahmoye, Darcy A. Downs +1 more | 2017-03-07 |
| 9528370 | Fluid pressure pulse generating apparatus with primary seal assembly, back up seal assembly and pressure compensation device and method of operating same | Aaron W. Logan, David A. Switzer | 2016-12-27 |
| 9523246 | Centralizer for downhole probes | Aaron W. Logan, Patrick R. Derkacz | 2016-12-20 |
| 9500075 | Measurement while drilling fluid pressure pulse generator | Aaron W. Logan | 2016-11-22 |
| 9494035 | Fluid pressure pulse generator and method of using same | Aaron W. Logan, David A. Switzer, Jili Liu | 2016-11-15 |
| 9476296 | Fluid pressure pulse generating apparatus with primary seal assembly, back up seal assembly and pressure compensation device and method of operating same | Aaron W. Logan, David A. Switzer | 2016-10-25 |
| 9464521 | Fluid pressure pulse generating apparatus with pressure compensation device and pulser assembly housing | Aaron W. Logan | 2016-10-11 |
| 9453410 | Mud hammer | Aaron W. Logan | 2016-09-27 |
| 9422809 | Fluid pressure pulse generator and method of using same | Aaron W. Logan, David A. Switzer, Jili Liu | 2016-08-23 |