Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6719056 | Sand removal method | Corey Hoffman, Richard L. Giroux, Stephen J. Norris | 2004-04-13 |
| 6702012 | High pressure rotating drilling head assembly with hydraulically removable packer | Thomas F. Bailey | 2004-03-09 |
| 6640904 | Sand removal and device retrieval tool | Corey Hoffman, Richard L. Giroux, Stephen J. Norris | 2003-11-04 |
| 6595289 | Method and apparatus for plugging a wellbore | David M. Tumlin, Gene Fugatt, David Hosie | 2003-07-22 |
| 6547002 | High pressure rotating drilling head assembly with hydraulically removable packer | Thomas F. Bailey | 2003-04-15 |
| 6427776 | Sand removal and device retrieval tool | Corey Hoffman, Richard L. Giroux, Stephen J. Norris | 2002-08-06 |
| 6349771 | Flow actuated shut-off valve | — | 2002-02-26 |
| 6250406 | Connection arrangement for a two-piece annular body | — | 2001-06-26 |
| 5176217 | Sealing assembly for subterranean well packing unit | Patrick C. Stone | 1993-01-05 |
| 5103904 | Sealing assembly for subterranean well packing unit | Patrick C. Stone | 1992-04-14 |
| 5044433 | Pack-off well apparatus with straight shear release | Richard P. Rubbo, Brett W. Bouldin, Frank Mooney | 1991-09-03 |
| 5044441 | Pack-off well apparatus and method | Dick Rubbo, Brett W. Bouldin, Frank Mooney | 1991-09-03 |
| 4836278 | Apparatus for isolating a plurality of vertically spaced perforations in a well conduit | Patrick C. Stone, Gary Duron Ingram | 1989-06-06 |
| 4789029 | Tension set packing apparatus for subterranean wells | Patrick C. Stone, Gary Duron Ingram | 1988-12-06 |
| 4735266 | Method and apparatus for isolating a plurality of vertically spaced perforations in a well conduit | Patrick C. Stone, Gary Duron Ingram | 1988-04-05 |
| 4665978 | High temperature packer for well conduits | — | 1987-05-19 |
| 4648455 | Method and apparatus for steam injection in subterranean wells | — | 1987-03-10 |
| 4548265 | Downhole steam packing | — | 1985-10-22 |
| 4359090 | Anchoring mechanism for well packer | — | 1982-11-16 |