Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1095625 | 3D printer | — | 2025-09-30 |
| 10712466 | Casing thickness measurement using acoustic wave correlation | Yibing Zheng, Tatiana Gilstrap, Arthur Cheng, Robert Eric Epstein | 2020-07-14 |
| 10301932 | Ultrasonic casing and cement evaluation method using a ray tracing model | Yibing Zheng, Tatiana Gilstrap, Arthur Cheng, Robert Eric Epstein, Zhijuan Zhang | 2019-05-28 |
| 10202846 | Stoneley wave based pipe telemetry | Roland E. Chemali, Ronald Johannes Dirksen, Paul F. Rodney, Arthur C. H. Cheng | 2019-02-12 |
| 9952344 | High-performance dipole acoustic transmitter | Chung Chang, Gary Kainer, Haoshi Song | 2018-04-24 |
| 8982671 | Seismic energy sources and methods of use | Mark Elliott Willis, Erkan Ay, Norm Warpinski | 2015-03-17 |