Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5113803 | Reduction of No.sub.x emissions from gasoline engines | Don P. Hollrah | 1992-05-19 |
| 4553979 | Diesel fuel compositions | J. Vincent Hanlon, James B. Retzloff | 1985-11-19 |