Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814444 | Process for the selective reduction of 2-hydroxyquinoxaline-4-oxides | John W. Sargent, Joseph A. Feiccabrino | 1989-03-21 |
| 4814504 | Process for the production of diphenylamine | — | 1989-03-21 |