| D1084814 |
Knife sharpener |
— |
2025-07-22 |
| 11649720 |
Integrated downhole system with plural telemetry subsystems |
Aaron W. Logan, David A. Switzer, Jili Liu, Justin C. Logan |
2023-05-16 |
| 11359483 |
Integrated downhole system with plural telemetry subsystems |
Aaron W. Logan, David A. Switzer, Jili Liu, Justin C. Logan |
2022-06-14 |
| 11073015 |
Integrated downhole system with plural telemetry subsystems |
Aaron W. Logan, David A. Switzer, Jili Liu, Justin C. Logan |
2021-07-27 |
| 10731459 |
Integrated downhole system with plural telemetry subsystems |
Aaron W. Logan, David A. Switzer, Jili Liu, Justin C. Logan |
2020-08-04 |
| 10443374 |
Electromagnetic communications system and method for a drilling operation |
David A. Switzer, Jili Liu, Mojtaba Kazemi Miraki, Aaron W. Logan |
2019-10-15 |
| 10253621 |
Integrated downhole system with plural telemetry subsystems |
Aaron W. Logan, David A. Switzer, Jili Liu, Justin C. Logan |
2019-04-09 |
| 10233747 |
Optimizing electromagnetic telemetry transmissions |
Jili Liu, Aaron W. Logan, David A. Switzer, Monica E. Varga, Mojtaba Kazemi Miraki |
2019-03-19 |
| 10215021 |
Downhole electromagnetic and mud pulse telemetry apparatus |
David A. Switzer, Jili Liu, Aaron W. Logan |
2019-02-26 |
| 10202844 |
Method and system for transmitting a data frame of an electromagnetic telemetry signal to or from a downhole location |
David A. Switzer, Jili Liu, Aaron W. Logan |
2019-02-12 |
| 10066481 |
Downhole electromagnetic and mud pulse telemetry apparatus |
David A. Switzer, Jili Liu, Aaron W. Logan |
2018-09-04 |
| 9995134 |
Electromagnetic pulse downhole telemetry |
Jili Liu, Aaron W. Logan, David A. Switzer |
2018-06-12 |
| 9988896 |
Method and system for transmitting a data frame of an electromagnetic telemetry signal to or from a downhole location |
David A. Switzer, Jili Liu, Aaron W. Logan |
2018-06-05 |
| 9988897 |
Optimizing electromagnetic telemetry transmissions |
Jili Liu, Aaron W. Logan, David A. Switzer, Monica E. Varga, Mojtaba Kazemi Miraki |
2018-06-05 |
| 9903198 |
Downhole electromagnetic and mud pulse telemetry apparatus |
David A. Switzer, Jili Liu, Aaron W. Logan |
2018-02-27 |
| 9771792 |
Method and apparatus for multi-channel downhole electromagnetic telemetry |
Jili Liu, David A. Switzer, Aaron W. Logan |
2017-09-26 |
| 9765615 |
Optimizing electromagnetic telemetry transmissions |
Jili Liu, Aaron W. Logan, David A. Switzer, Monica E. Varga, Mojtaba Kazemi Miraki |
2017-09-19 |
| 9752429 |
Downhole electromagnetic and mud pulse telemetry apparatus |
David A. Switzer, Jili Liu, Aaron W. Logan |
2017-09-05 |
| 9719345 |
Electromagnetic communications system and method for a drilling operation |
David A. Switzer, Jili Liu, Mojtaba Kazemi Miraki, Aaron W. Logan |
2017-08-01 |
| 9664038 |
Method and system for transmitting a data frame of an electromagnetic telemetry signal to or from a downhole location |
David A. Switzer, Jili Liu, Aaron W. Logan |
2017-05-30 |
| 9605535 |
Integrated downhole system with plural telemetry subsystems |
Aaron W. Logan, David A. Switzer, Jili Liu, Justin C. Logan |
2017-03-28 |
| 9574441 |
Downhole telemetry signal modulation using pressure pulses of multiple pulse heights |
Jili Liu, David A. Switzer, Aaron W. Logan |
2017-02-21 |
| 9435196 |
Downhole electromagnetic and mud pulse telemetry apparatus |
David A. Switzer, Jili Liu, Aaron W. Logan |
2016-09-06 |
| 9291049 |
Downhole electromagnetic and mud pulse telemetry apparatus |
David A. Switzer, Jili Liu, Aaron W. Logan |
2016-03-22 |