Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11719090 | Enhanced cement bond and micro-annulus detection and analysis | Douglas J. Patterson | 2023-08-08 |
| 11378708 | Downhole fluid density and viscosity sensor based on ultrasonic plate waves | Xiaochu Yao, Douglas J. Patterson | 2022-07-05 |
| 11066920 | Guided wave attenuation well logging excitation optimizer based on waveform modeling | Xiaochu Yao, Douglas J. Patterson, Rajdeep Das | 2021-07-20 |
| 10436018 | Downhole electromagnetic acoustic transducer sensors | Babak Kouchmeshky, Xiaochu Yao, Stanislav W. Forgang, Marc Ramirez, Otto N. Fanini +2 more | 2019-10-08 |