Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5632616 | Method and apparatus for injecting air into long cement kilns | James R. Tutt, Eric R. Hansen | 1997-05-27 |
| 4861567 | Methods of reducing NO.sub.x and SO.sub.x emissions from combustion systems | Shih L. Chen, James McCarthy, David W. Pershing | 1989-08-29 |
| 4851201 | Methods of removing NO.sub.x and SO.sub.x emissions from combustion systems using nitrogenous compounds | Shih L. Chen, James McCarthy, David W. Pershing | 1989-07-25 |
| 4381718 | Low emissions process and burner | George P. Carver, G. Blair Martin, David W. Pershing, Dee P. Rees, Dennis M. Zallen | 1983-05-03 |