Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7063729 | Low-emissions diesel fuel | James M. Valentine, Barry N. Sprague | 2006-06-20 |
| 6361754 | Reducing no emissions from an engine by on-demand generation of ammonia for selective catalytic reduction | Eric N. Balles, John E. Hofmann | 2002-03-26 |
| 6203770 | Urea pyrolysis chamber and process for reducing lean-burn engine NOx emissions by selective catalytic reduction | Eric N. Balles, Theodore J. Tarabulski, John E. Hofmann, James M. Valentine | 2001-03-20 |
| 6063350 | Reducing no.sub.x emissions from an engine by temperature-controlled urea injection for selective catalytic reduction | Theodore J. Tarabulski, Curtis J. Knapper, James M. Valentine | 2000-05-16 |
| 6051040 | Method for reducing emissions of NO.sub.x and particulates from a diesel engine | — | 2000-04-18 |
| 6023928 | Method for reducing emissions from a diesel engine | James M. Valentine | 2000-02-15 |
| 6003303 | Methods for reducing harmful emissions from a diesel engine | James M. Valentine, Barry N. Sprague, W. Robert Epperly | 1999-12-21 |
| 5976475 | Reducing NO.sub.x emissions from an engine by temperature-controlled urea injection for selective catalytic reduction | Eric N. Balles, John E. Hofmann, Theodore J. Tarabulski | 1999-11-02 |
| 5968464 | Urea pyrolysis chamber and process for reducing lean-burn engine NO.sub.x emissions by selective catalytic reduction | Eric N. Balles, Theodore J. Tarabulski, John E. Hofmann, James M. Valentine | 1999-10-19 |
| 5819529 | Method for reducing emissions from two-stroke engines | — | 1998-10-13 |
| 5809775 | Reducing NO.sub.x emissions from an engine by selective catalytic reduction utilizing solid reagents | Theodore J. Tarabulski, James M. Valentine | 1998-09-22 |
| 5809774 | System for fueling and feeding chemicals to internal combustion engines for NO.sub.x reduction | James M. Valentine, Theodore J. Tarabulski | 1998-09-22 |
| 5743922 | Enhanced lubricity diesel fuel emulsions for reduction of nitrogen oxides | James M. Valentine, Leonard Dubin | 1998-04-28 |
| 5732548 | Method for reducing harmful emissions from two-stroke engines | — | 1998-03-31 |
| 5693106 | Platinum metal fuel additive for water-containing fuels | Barry N. Sprague, James M. Valentine | 1997-12-02 |
| 5584894 | Reduction of nitrogen oxides emissions from vehicular diesel engines | James M. Valentine | 1996-12-17 |
| 5501714 | Operation of diesel engines with reduced particulate emission by utilization of platinum group metal fuel additive and pass-through catalytic oxidizer | James M. Valentine | 1996-03-26 |
| 5342592 | Lance-type injection apparatus for introducing chemical agents into flue gases | Francois X. Grimard | 1994-08-30 |
| 5266083 | Method for reducing pollution emissions from a diesel engine | James M. Valentine, W. Robert Epperly, Barry N. Sprague | 1993-11-30 |
| 5057293 | Multi-stage process for reducing the concentration of pollutants in an effluent | William R. Epperly, George F. Shulof, Jr., James C. Sullivan, Barry N. Sprague, John H. O'Leary | 1991-10-15 |
| 4863704 | Multi-stage process for reducing the concentration of pollutants in an effluent using an ammonium salt | William R. Epperly, George F. Shulof, Jr., James C. Sullivan, Barry N. Sprague | 1989-09-05 |
| 4830839 | Ammonia scrubbing | William R. Epperly, James C. Sullivan | 1989-05-16 |
| 4776289 | Method and apparatus for burning pulverized solid fuel | Normand Brais, Francois X. Grimard | 1988-10-11 |
| 4777024 | Multi-stage process for reducing the concentration of pollutants in an effluent | William R. Epperly, George F. Shulof, Jr., James C. Sullivan | 1988-10-11 |