Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6997252 | Hydraulic setting tool for packers | Jesse Cale Porter, Brian K. Wilkinson, Donald R. Smith | 2006-02-14 |
| 6220349 | Low pressure, high temperature composite bridge plug | Gregory W. Vargus, Kevin T. Berscheidt, Donny Winslow, Donald R. Smith, Thomas W. Hawkins | 2001-04-24 |
| 6082459 | Drill string diverter apparatus and method | Henry E. Rogers | 2000-07-04 |
| 5701959 | Downhole tool apparatus and method of limiting packer element extrusion | Yusheng Yuan, Douglas Wayne Davison | 1997-12-30 |
| 5404956 | Hydraulic setting tool and method of use | J. Tad Bohlen, Ricky D. Jacobi, Donald R. Smith, Seth Thomas | 1995-04-11 |
| 5398763 | Wireline set baffle and method of setting thereof | Brock Watson, James Frederick Pyecroft, David D. Brisco, Rick L. Middaugh, Paul W. Roden +2 more | 1995-03-21 |
| 5390737 | Downhole tool with sliding valve | Ricky D. Jacobi, Kevin T. Berscheidt | 1995-02-21 |
| 5330000 | Squeeze packer latch | Kenneth J. Givens, Eric Stenzel, Kevin Bersheidt, Jerry T. Bohlen | 1994-07-19 |
| 5271468 | Downhole tool apparatus with non-metallic components and methods of drilling thereof | Steven G. Streich, Kevin T. Berscheidt, Rick D. Jacobi | 1993-12-21 |
| 5224540 | Downhole tool apparatus with non-metallic components and methods of drilling thereof | Steven G. Streich, Kevin T. Berscheidt, Rick D. Jacobi | 1993-07-06 |
| 5074361 | Retrieving tool and method | David Paul Brisco | 1991-12-24 |
| 4834184 | Drillable, testing, treat, squeeze packer | Steven G. Streich | 1989-05-30 |
| 4651829 | Subsurface control valve | Kenneth D. Caskey | 1987-03-24 |
| 4445571 | Circulation valve | — | 1984-05-01 |
| 4324293 | Circulation valve | — | 1982-04-13 |
| 4311197 | Annulus pressure operated closure valve with improved reverse circulation valve | — | 1982-01-19 |