Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6953085 | Well pressure activated pack-off head | — | 2005-10-11 |
| 6772843 | Sea-floor pressure head assembly | Freeman L. Hill, Ron Nelson | 2004-08-10 |
| 6609571 | Remote sub-sea lubricator | Freeman L. Hill | 2003-08-26 |
| 6588502 | Well pressure activated pack-off head | — | 2003-07-08 |
| 5992246 | Underwater corrosion locater | — | 1999-11-30 |
| 5837925 | Shaped charge retainer system | — | 1998-11-17 |
| 5429194 | Method for inserting a wireline inside coiled tubing | — | 1995-07-04 |
| 5415238 | Borehole sidetrack locator | — | 1995-05-16 |
| 5209304 | Propulsion apparatus for positioning selected tools in tubular members | — | 1993-05-11 |