Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6253856 | Pack-off system | Corey Hoffman | 2001-07-03 |
| 5961123 | Metal back-up ring for downhole seals | Jose Eduardo Barragan | 1999-10-05 |
| 4836278 | Apparatus for isolating a plurality of vertically spaced perforations in a well conduit | Patrick C. Stone, Mike A. Luke | 1989-06-06 |
| 4789029 | Tension set packing apparatus for subterranean wells | Patrick C. Stone, Mike A. Luke | 1988-12-06 |
| 4735266 | Method and apparatus for isolating a plurality of vertically spaced perforations in a well conduit | Patrick C. Stone, Mike A. Luke | 1988-04-05 |
| 4610300 | Tubing actuated retrievable packer | Albert A. Mullins, II, Patrick C. Stone | 1986-09-09 |