Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5130706 | Direct switching modulation for electromagnetic borehole telemetry | — | 1992-07-14 |
| 4920655 | High speed well surveying and land navigation | — | 1990-05-01 |
| 4833787 | High speed well surveying and land navigation | — | 1989-05-30 |
| 4706388 | Borehole initial alignment and change determination | — | 1987-11-17 |
| 4611405 | High speed well surveying | — | 1986-09-16 |
| 4471533 | Well mapping system and method with sensor output compensation | Paul Ott | 1984-09-18 |
| 4468863 | High speed well surveying | — | 1984-09-04 |
| 4459760 | Apparatus and method to communicate information in a borehole | Fred L. Watson | 1984-07-17 |
| 4297790 | Survey apparatus and method employing rate-of-turn and free gyroscopes | John R. Cash, Paul Ott | 1981-11-03 |
| 4293046 | Survey apparatus, method employing angular accelerometer | — | 1981-10-06 |
| 4199869 | Mapping apparatus employing two input axis gyroscopic means | — | 1980-04-29 |
| 4197654 | Survey apparatus and method employing all latitude, all attitude gyrocompassing | John R. Cash, Paul Ott | 1980-04-15 |
| 4192077 | Survey apparatus and method employing rate-of-turn and free gyroscopes | John R. Cash, Paul Ott | 1980-03-11 |