Issued Patents 2018
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10082020 | Acoustic dipole piston transmitter | Laurence T. Wisniewski, Gary L. Fickert, Michael Simmons, Chung Chang | 2018-09-25 |
| 10024992 | Structural element for sonic tools and acoustic isolators | Chung Chang, Muralidhar Seshadri, Jean G. Saint Germain, Paul G. Junghans | 2018-07-17 |
| 9952344 | High-performance dipole acoustic transmitter | Chung Chang, Tianrun Chen, Haoshi Song | 2018-04-24 |
| 9891336 | Acoustic isolator for downhole tools | Chung Chang, Abbas Arian, Paul G. Junghans, Arthur Cheng, Randall B. Jones | 2018-02-13 |