Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659204 | Method and apparatus for recovering core samples under pressure | James T. Aumann | 2003-12-09 |
| 6378631 | Apparatus for recovering core samples at in situ conditions | James T. Aumann | 2002-04-30 |
| 6305482 | Method and apparatus for transferring core sample from core retrieval chamber under pressure for transport | James T. Aumann | 2001-10-23 |
| 6230825 | Apparatus for recovering core samples under pressure | James T. Aumann | 2001-05-15 |
| 6216804 | Apparatus for recovering core samples under pressure | James T. Aumann | 2001-04-17 |
| 5322019 | System for the initiation of downhole explosive and propellant systems | — | 1994-06-21 |
| 4904228 | Universal ball joint | Lawrence Frear, John S. Davis | 1990-02-27 |
| 4878548 | Nozzle retention system for a drill bit | Alfred Ostertag, Robert Iversen, Kenneth D. Enever, Steven R. Radford | 1989-11-07 |
| 4580635 | Automatic drill pipe inside wiper | Steven R. Radford | 1986-04-08 |
| 4552229 | Externally powered core catcher | Steven R. Radford | 1985-11-12 |
| 4429741 | Self powered downhole tool anchor | — | 1984-02-07 |
| 4356872 | Downhole core barrel flushing system | — | 1982-11-02 |