Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6494258 | Downhole gas-liquid separator for production wells | — | 2002-12-17 |
| 5992521 | Method and system for increasing oil production from an oil well producing a mixture of oil and gas | Frank E. Bergren | 1999-11-30 |
| 5570744 | Separator systems for well production fluids | Miroslav M. Kolpak, Scott A. Mattison, Ronald G. Oba, M. Jane Williamson | 1996-11-05 |
| 5431228 | Downhole gas-liquid separator for wells | M. Jane Williamson, Miroslav M. Kolpak, Richard L. Payne | 1995-07-11 |
| 5343945 | Downholde gas/oil separation systems for wells | M. Jane Williamson, Jeffrey Harris | 1994-09-06 |