Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5644244 | Method for analyzing a petroleum stream | John D. Marrelli, Dale F. Brost, Farhan Siddioui, Joseph D. Stafford | 1997-07-01 |
| 5412326 | Means and method for analyzing a petroleum stream | John D. Marrelli, Michael G. Durrett, David A. Helms, Gregory J. Hatton | 1995-05-02 |
| 5383353 | Means and method for analyzing a petroleum stream | John D. Marrelli, Dale F. Brost, Farhan Siddiqui, Joseph D. Stafford | 1995-01-24 |
| 5107219 | Means and method for determining the conductance of a fluid | John D. Marrelli, Gregory J. Hatton, Farhan Siddiqui, Joseph D. Stafford | 1992-04-21 |