Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6927021 | Photographic developing composition and use thereof in the development of a photographic element | Brian Parker, Nicholas A. Pightling | 2005-08-09 |
| 6764814 | Photographic developing composition and use thereof in the development of a photographic element | Brian Parker, Nicholas A. Pightling | 2004-07-20 |
| 4416969 | Hydrazide compositions, methods employing them and photographic materials containing them | Gareth B. Evans | 1983-11-22 |