| 6003303 |
Methods for reducing harmful emissions from a diesel engine |
Jeremy D. Peter-Hoblyn, James M. Valentine, Barry N. Sprague |
1999-12-21 |
| 5749928 |
Method for reducing emissions from or increasing the utilizable energy of fuel for powering internal combustion engines |
Barry N. Sprague, Danny T. Kelso, Wayne E. Bowers |
1998-05-12 |
| 5645756 |
Hardness suppression in urea solutions |
Leonard Dubin, Barry N. Sprague, Thure von Harpe |
1997-07-08 |
| 5441713 |
Hardness suppression in urea solutions |
Leonard Dubin, Barry N. Sprague, Thure von Harpe |
1995-08-15 |
| 5266083 |
Method for reducing pollution emissions from a diesel engine |
Jeremy D. Peter-Hoblyn, James M. Valentine, Barry N. Sprague |
1993-11-30 |
| 5215652 |
Method for regenerating, replacing or treating the catalyst in a hydroprocessing reactor |
Barry N. Sprague, Danny T. Kelso, Wayne E. Bowers |
1993-06-01 |
| 5047219 |
Hybrid process for nitrogen oxides reduction |
Barry N. Sprague |
1991-09-10 |
| 5034020 |
Method for catalyzing fuel for powering internal combustion engines |
Barry N. Sprague |
1991-07-23 |