Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8620636 | Interpreting well test measurements | Lang Zhan, Fikri John Kuchuk, James G. Filas | 2013-12-31 |
| 8020437 | Method and apparatus to quantify fluid sample quality | Lang Zhan, James G. Filas, Graham Birkett | 2011-09-20 |
| 7992638 | Downhole disconnect mechanism | Jim B. Benton | 2011-08-09 |
| 7849920 | System and method for optimizing production in a well | David Sask, Lang Zhan, James G. Filas | 2010-12-14 |
| 7775273 | Tool using outputs of sensors responsive to signaling | David Merlau, Lang Zhan, Jim B. Benton | 2010-08-17 |
| 7478555 | Technique and apparatus for use in well testing | Lang Zhan, James G. Filas | 2009-01-20 |