Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5970787 | Downhole gravity tool | — | 1999-10-26 |
| 5043952 | Monopole transmitter for a sonic well tool | David C. Hoyle, Jeffrey B. Aron, Anthony K. Booer | 1991-08-27 |
| 5036945 | Sonic well tool transmitter receiver array including an attenuation and delay apparatus | David C. Hoyle, Jeffrey B. Aron | 1991-08-06 |
| 4872526 | Sonic well logging tool longitudinal wave attenuator | David C. Hoyle | 1989-10-10 |
| 4862991 | Sonic well logging tool transmitter | David C. Hoyle, James J. Walulik | 1989-09-05 |