Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9726008 | Sub-surface formation boundary detection using an electric-field borehole telemetry apparatus | Asong E. Suh, Stephan Graf | 2017-08-08 |
| 9702246 | Downhole MWD signal enhancement, tracking, and decoding | Tim Whitacre, Brett Van Steenwyk, Mohamed Youssef | 2017-07-11 |
| 9567849 | Telemetry antenna arrangement | Stephan Graf, William E. Denzel, Nathan Paszek | 2017-02-14 |
| 9482595 | Rotor state sensor system | Patrick J. Dempsey, Aaron Kellner, Joshua King | 2016-11-01 |
| 9481456 | Relative acceleration blade position measurement | Patrick J. Dempsey, Aaron Kellner, Joshua King | 2016-11-01 |
| 9317042 | Pitch feedback control splitting for helicopters with redundant actuators | Aaron L. Greenfield, Ole Wulff | 2016-04-19 |
| 9266608 | Compensating for lead-lag in rotor system | Vineet Sahasrabudhe | 2016-02-23 |
| 9068999 | Airspeed estimation using rotor vibrations | Harshad S. Sane | 2015-06-30 |
| 8490717 | Downhole magnetic measurement while rotating and methods of use | Neil W. Smith Bergstrom, James N. Towle | 2013-07-23 |
| 8044819 | Coal boundary detection using an electric-field borehole telemetry apparatus | Pierre C. Bessiere, James Liu | 2011-10-25 |