Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5912460 | Method for determining formation density and formation photo-electric factor with a multi-detector-gamma-ray tool | Christian Stoller, Olivier Philip, Nihal Wijeyesekera, Peter Wraight | 1999-06-15 |
| 5841135 | Method and apparatus for measuring formation density and the formation photo-electric factor with a multi-detector gamma-gamma tool | Christian Stoller, Nihal Wijeyesekera, Donald C. McKeon, Peter Wraight | 1998-11-24 |
| 5684299 | Method for determining porosity in an invaded gas reservoir | — | 1997-11-04 |