Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7984771 | Methods and apparatus for attenuating drillstring vibrations | Jahir Pabon, Joachim Sihler, Chaur-Jian Hsu | 2011-07-26 |
| 7828082 | Methods and apparatus for attenuating drillstring vibrations | Jahir Pabon, Joachim Sihler, Chaur-Jian Hsu | 2010-11-09 |
| 6279655 | Thixotropic materials | Stephen Davies, Geoffrey Maitland | 2001-08-28 |
| 5697441 | Selective zonal isolation of oil wells | Claude Vercaemer, Stephen Davies, Geoffrey Maitland, Jean-Pierre Poyet | 1997-12-16 |