Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5862862 | Apparatus for completing a subterranean well and associated methods of using same | — | 1999-01-26 |
| 5813465 | Apparatus for completing a subterranean well and associated methods of using same | James M. Barker | 1998-09-29 |
| 5575331 | Chemical cutter | — | 1996-11-19 |
| 5509480 | Chemical cutter and method for high temperature tubular goods | Donna K. Terrell | 1996-04-23 |
| 5322118 | Downhole chemical cutter | — | 1994-06-21 |
| 5320174 | Downhole chemical cutting tool and process | Donna K. Terrell | 1994-06-14 |
| 4971146 | Downhole chemical cutting tool | — | 1990-11-20 |
| 4889187 | Multi-run chemical cutter and method | Donna P. Terrell, Setella Parks | 1989-12-26 |
| 4620591 | Chemical cutting apparatus having selective pressure bleed-off | Donna K. Pratt | 1986-11-04 |
| 4619318 | Chemical cutting method and apparatus | Donna K. Pratt | 1986-10-28 |
| 4613394 | Staged chemical pipe cutter | Benny J. Holmes | 1986-09-23 |
| 4494601 | Downhole chemical cutting tool | Donna K. Pratt | 1985-01-22 |
| 4491178 | Through tubing bridge plug | Donna K. Pratt | 1985-01-01 |
| 4428430 | Chemical method and apparatus for perforating drill collars | — | 1984-01-31 |
| 4415029 | Downhole well tool and anchoring assembly | Donna K. Pratt | 1983-11-15 |
| 4345646 | Apparatus for chemical cutting | — | 1982-08-24 |