Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823711 | Static and dynamic calibration of quartz pressure transducers | Dingding Chen, Roger L. Schultz, Martin T. Hagan, Meng Fun | 2004-11-30 |
| 5375658 | Shut-in tools and method | Roger L. Schultz, Harold Kent Beck, William L. Bohan | 1994-12-27 |
| 5332035 | Shut-in tools | Roger L. Schultz, Harold Kent Beck, William L. Bohan | 1994-07-26 |
| 5279363 | Shut-in tools | Roger L. Schultz, Harold Kent Beck, William L. Bohan | 1994-01-18 |
| 5234057 | Shut-in tools | Roger L. Schultz, Harold Kent Beck, William L. Bohan | 1993-08-10 |
| 4790378 | Well testing apparatus | Carlos E. Montgomery, Ricky M. Holloman | 1988-12-13 |