Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10323478 | Modular insert float system | Michael R. Sutton, Cleo (John) Clayton Holland | 2019-06-18 |
| 9334710 | Interruptible pressure testing valve | Kendall Lee Pacey, Matthew Todd Howell | 2016-05-10 |
| 8322449 | Consumable downhole tools | Robert Clayton, Michael C. Robertson | 2012-12-04 |
| 8056638 | Consumable downhole tools | Robert Clayton, Michael C. Robertson | 2011-11-15 |
| 7255162 | Methods and apparatus for use in subterranean cementing operations | Michael D. Stevens, David D. Szarka, Henry E. Rogers, Brett Fears | 2007-08-14 |
| 6666275 | Bridge plug | Kenneth G. Neal, Don S. Folds, Ronald L. Hinkie, Loren Swor, Brian K. Wilkinson | 2003-12-23 |
| 6491116 | Frac plug with caged ball | Donald R. Smith, Lee W. Stepp, Don S. Folds, Gregory W. Vargus | 2002-12-10 |
| 6394180 | Frac plug with caged ball | Donald R. Smith, Lee W. Stepp, Don S. Folds, Gregory W. Vargus | 2002-05-28 |
| 6220349 | Low pressure, high temperature composite bridge plug | Gregory W. Vargus, Donald F. Hushbeck, Donny Winslow, Donald R. Smith, Thomas W. Hawkins | 2001-04-24 |
| 5984007 | Chip resistant buttons for downhole tools having slip elements | Yusheng Yuan, Douglas Wayne Davison | 1999-11-16 |
| 5839515 | Slip retaining system for downhole tools | Yusheng Yuan, Douglas Wayne Davison | 1998-11-24 |
| 5669448 | Overbalance perforating and stimulation method for wells | James W. Minthorn, Brian R. White, Ronald E. Savage, Merlin F. Anderson, Dudley Vann +3 more | 1997-09-23 |
| 5540279 | Downhole tool apparatus with non-metallic packer element retaining shoes | Alton Branch, Donald R. Smith | 1996-07-30 |
| 5390737 | Downhole tool with sliding valve | Ricky D. Jacobi, Donald F. Hushbeck | 1995-02-21 |
| 5343954 | Apparatus and method of anchoring and releasing from a packer | J. Tad Bohlen, Donald R. Smith | 1994-09-06 |
| 5271468 | Downhole tool apparatus with non-metallic components and methods of drilling thereof | Steven G. Streich, Donald F. Hushbeck, Rick D. Jacobi | 1993-12-21 |
| 5224540 | Downhole tool apparatus with non-metallic components and methods of drilling thereof | Steven G. Streich, Donald F. Hushbeck, Rick D. Jacobi | 1993-07-06 |
| 5207274 | Apparatus and method of anchoring and releasing from a packer | Steven G. Streich | 1993-05-04 |