Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11840905 | Stage tool | Stephanie Dianne Wind, Douglas Brian Farley | 2023-12-12 |
| D918750 | Scale with an extendable length measuring instrument | — | 2021-05-11 |
| 9677380 | Sliding sleeve having inverting ball seat | — | 2017-06-13 |
| 9624756 | Sliding sleeve having contracting, dual segmented ball seat | Michael W. Cast | 2017-04-18 |
| 7128147 | Modular liner hanger | Jozeph Robert Marcin | 2006-10-31 |
| 7108071 | Automatic tubing filler | Roland Richard Freiheit, Geoffrey David Steele | 2006-09-19 |
| 6612372 | Two-stage downhole packer | Roland Richard Freiheit | 2003-09-02 |
| 6513595 | Port collar assembly for use in a wellbore | Roland Richard Freiheit, Brett Gullory | 2003-02-04 |
| 5447200 | Method and apparatus for downhole sand clean-out operations in the petroleum industry | Garth Dedora, Michael Wawrzynowski | 1995-09-05 |
| 5423382 | Apparatus for releasing perforating gun equipment from a well casing | John A. Barton, Robert G. Davidson | 1995-06-13 |