Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861567 | Methods of reducing NO.sub.x and SO.sub.x emissions from combustion systems | Michael P. Heap, Shih L. Chen, David W. Pershing | 1989-08-29 |
| 4851201 | Methods of removing NO.sub.x and SO.sub.x emissions from combustion systems using nitrogenous compounds | Michael P. Heap, Shih L. Chen, David W. Pershing | 1989-07-25 |