Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5644244 | Method for analyzing a petroleum stream | John D. Marrelli, Dale F. Brost, Farhan Siddioui, Lisa L. Pepin | 1997-07-01 |
| 5625293 | Determination of the watercut of a multiphase flow directly from measured microwave frequency dielectric properties | John D. Marrelli, David A. Helms, Michael G. Durrett, Gregory J. Hatton | 1997-04-29 |
| 5473256 | Combination microwave waveguide and pressure barrier | Gregory J. Hatton, David A. Helms | 1995-12-05 |
| 5386719 | Debris reducing test cell for three phase meters | John D. Marrelli | 1995-02-07 |
| 5383353 | Means and method for analyzing a petroleum stream | John D. Marrelli, Dale F. Brost, Farhan Siddiqui, Lisa L. Pepin | 1995-01-24 |
| 5107219 | Means and method for determining the conductance of a fluid | John D. Marrelli, Lisa L. Pepin, Gregory J. Hatton, Farhan Siddiqui | 1992-04-21 |
| 4977377 | Microwave water cut monitor with temperature controlled test cell | Michael G. Durrett, David A. Helms, Gregory J. Hatton, Earl L. Dowty, John D. Marrelli +1 more | 1990-12-11 |
| 4947128 | Co-variance microwave water cut monitoring means and method | Gregory J. Hatton, David A. Helms, Michael G. Durrett, John D. Marrelli | 1990-08-07 |
| 4184143 | Seismic signal conductor testing system | — | 1980-01-15 |