Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5209765 | Centrifugal separator systems for multi-phase fluids | Miroslav M. Kolpak | 1993-05-11 |
| 5160814 | Hydraulically-actuated downhole seismic source | — | 1992-11-03 |
| 5115196 | Girth weld detection system for pipeline survey pig | Stanley Low, Pedro F. Lara, David L. Foreman | 1992-05-19 |
| 5092423 | Downhole seismic array system | — | 1992-03-03 |
| 5063542 | Piezoelectric transducer with displacement amplifier | Keith W. Katahara, Herbert A. Wolcott | 1991-11-05 |
| 5029614 | Tandem seal system for testing pipelines | Pedro F. Lara | 1991-07-09 |
| 5020036 | Magnetostrictive transducer for logging tool | Keith W. Katahara | 1991-05-28 |
| 4876672 | Ultrasonic logging tool with rotating exposed transducer | Thomas Schasteen | 1989-10-24 |
| 4835876 | Instrument chassis and body supports for pipeline survey pig | Michel Cabiran, John David Cooper | 1989-06-06 |
| 4830105 | Centralizer for wellbore apparatus | — | 1989-05-16 |
| 4819760 | Locking arm for well tool | — | 1989-04-11 |
| 4766955 | Wellbore fluid sampling apparatus | — | 1988-08-30 |
| 4706744 | Wireline tool connector | Lonnie J. Smith, Dennis R. Wood | 1987-11-17 |
| 4685516 | Apparatus for operating wireline tools in wellbores | Lonnie J. Smith, Curtis G. Blount | 1987-08-11 |