Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10712466 | Casing thickness measurement using acoustic wave correlation | Tianrun Chen, Yibing Zheng, Arthur Cheng, Robert Eric Epstein | 2020-07-14 |
| 10365389 | MEMS-based transducers on a downhole tool | Yinghui Lu, John Philip Granville, Yibing Zheng, David Alan Welsh | 2019-07-30 |
| 10301932 | Ultrasonic casing and cement evaluation method using a ray tracing model | Tianrun Chen, Yibing Zheng, Arthur Cheng, Robert Eric Epstein, Zhijuan Zhang | 2019-05-28 |
| 10241086 | Validation of cased-hole acoustic tools | Walmy Cuello Jimenez, Xueyu Pang, Paul Joseph Jones, Robert Eric Epstein, Zachary Edward Gordon +1 more | 2019-03-26 |
| 9606254 | Determining cement impedance from a formation boundary | Arthur Cheng, Mark Elliott Willis, Robert Eric Epstein | 2017-03-28 |
| 9322807 | Ultrasonic signal time-frequency decomposition for borehole evaluation or pipeline inspection | Yinghui Lu, Arthur Cheng, Zhijuan Zhang, Rob Epstein | 2016-04-26 |