Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12371968 | Tubing insert isolation valve for use with legacy wells, and methods of use thereof | — | 2025-07-29 |
| 10590740 | Modified downhole isolation tool having a seating means and ported sliding sleeve | Peter Krawiec | 2020-03-17 |
| 8899316 | Downhole isolation tool having a ported sliding sleeve | Peter Krawiec | 2014-12-02 |
| 8893776 | Downhole ported shifting sleeve | Peter Krawiec | 2014-11-25 |
| 7610956 | Wellhead assembly for hydraulic pumping system | Keith David Farquharson, Gregory Wayne Allen, Cuong Chi Vuong | 2009-11-03 |
| 7562701 | Eccentric wellhead hydraulic drive unit | Daniel Graf | 2009-07-21 |
| 6854515 | Wellhead hydraulic drive unit | Ed Matthews, Jim Anaka | 2005-02-15 |