Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5749928 | Method for reducing emissions from or increasing the utilizable energy of fuel for powering internal combustion engines | W. Robert Epperly, Barry N. Sprague, Wayne E. Bowers | 1998-05-12 |
| 5215652 | Method for regenerating, replacing or treating the catalyst in a hydroprocessing reactor | W. Robert Epperly, Barry N. Sprague, Wayne E. Bowers | 1993-06-01 |