Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5500337 | Dyes comprising thioether macrocycles | Gerard A. Friour, Didier J. Martin, Marcel L. P. Riveccie | 1996-03-19 |
| 4752560 | Photographic element containing a cyclic thioether compound | Gerard A. Friour, Marcel L. P. Riveccie | 1988-06-21 |