| 5749928 |
Method for reducing emissions from or increasing the utilizable energy of fuel for powering internal combustion engines |
W. Robert Epperly, Barry N. Sprague, Danny T. Kelso |
1998-05-12 |
| 5215652 |
Method for regenerating, replacing or treating the catalyst in a hydroprocessing reactor |
W. Robert Epperly, Barry N. Sprague, Danny T. Kelso |
1993-06-01 |
| 4992249 |
Reduction of nitrogen- and carbon-based pollutants through the use of urea solutions |
— |
1991-02-12 |
| 4927612 |
Reduction of nitrogen- and carbon-based pollutants |
— |
1990-05-22 |
| 4892562 |
Diesel fuel additives and diesel fuels containing soluble platinum group metal compounds and use in diesel engines |
Barry N. Sprague |
1990-01-09 |
| 4891050 |
Gasoline additives and gasoline containing soluble platinum group metal compounds and use in internal combustion engines |
Barry N. Sprague |
1990-01-02 |
| 4752302 |
Method and composition for improving flame combustion of liquid carbonaceous fuels |
Barry N. Sprague |
1988-06-21 |
| 4751065 |
Reduction of nitrogen- and carbon-based pollutants |
— |
1988-06-14 |
| 4719092 |
Reduction of nitrogen-based pollutants through the use of urea solutions containing oxygenated hydrocarbon solvents |
— |
1988-01-12 |