Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9341044 | Self-energized seal or centralizer and associated setting and retraction mechanism | Joerg Lehr, Keven O'Connor, Steve Rosenblatt | 2016-05-17 |
| 9234403 | Downhole assembly | Joerg Lehr, Detlev Benedict | 2016-01-12 |
| 9022113 | One trip casing or liner directional drilling with expansion and cementing | Joerg Lehr, Keven O'Connor | 2015-05-05 |
| 8596370 | Annular seal for expanded pipe with one way flow feature | Keven O'Connor, Joerg Lehr | 2013-12-03 |