Issued Patents All Time
Showing 76–94 of 94 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5542480 | Perforating gun with retrievable mounting strips | Harrold D. Owen | 1996-08-06 |
| 5511617 | Apparatus and method for temporarily plugging a tubular | Philip M. Snider, Lyle W. Andrich | 1996-04-30 |
| 5490563 | Perforating gun actuator | Kevin R. George, Flint R. George | 1996-02-13 |
| 5316087 | Pyrotechnic charge powered operating system for downhole tools | Kevin R. Manke, Roger L. Schultz | 1994-05-31 |
| 5062485 | Variable time delay firing head | Kevin R. George | 1991-11-05 |
| 4969525 | Firing head for a perforating gun assembly | Kevin R. George, John E. Avila | 1990-11-13 |
| 4917189 | Method and apparatus for perforating a well | Flint R. George, Kevin R. George | 1990-04-17 |
| 4905759 | Collapsible gun assembly | Kevin R. George, David M. Haugen | 1990-03-06 |
| 4889183 | Method and apparatus for retaining shaped charges | Kenneth C. Sommers, Kevin R. George | 1989-12-26 |
| 4836109 | Control line differential firing head | Kevin R. George | 1989-06-06 |
| 4817710 | Apparatus for absorbing shock | A. Glen Edwards, Emmet F. Brieger | 1989-04-04 |
| 4804044 | Perforating gun firing tool and method of operation | Michael E. McMahan, Flint R. George | 1989-02-14 |
| 4800958 | Annulus pressure operated vent assembly | David M. Haugen, Robert R. Luke, Kevin R. George | 1989-01-31 |
| 4762179 | Pressure assist detonating bar and method for a tubing conveyed perforator | Robert R. Luke, Flint R. George, David M. Haugen, Kevin R. George | 1988-08-09 |
| 4732211 | Annulus pressure operated vent assembly | David M. Haugen, Robert R. Luke, Kevin R. George | 1988-03-22 |
| 4693317 | Method and apparatus for absorbing shock | A. Glen Edwards, Emmet F. Brieger | 1987-09-15 |
| 4693314 | Low actuation pressure bar vent | Stanley Wall, John H. Hales | 1987-09-15 |
| 4658902 | Surging fluids downhole in an earth borehole | A. Glen Edwards, Flint R. George, Kevin R. George, Emmert F. Brieger | 1987-04-21 |
| 4508174 | Downhole tool and method of using the same | Neal G. Skinner | 1985-04-02 |