Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4618715 | Production of oxygen and nitrogen substituted benzenes | Stephen C. W. Coltman | 1986-10-21 |
| 4414416 | Certain diacetyl-amino-phenolic derivatives | Richard A. Raphael, Stephen C. W. Coltman | 1983-11-08 |
| 4328341 | Process for preparing certain pyrano[3,2-g]quinoline 2,8-dicarboxylates and 4-oxo-quinoline-2-carboxylates | Richard A. Raphael, Stephen C. W. Coltman | 1982-05-04 |