Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5512415 | High contrast photographic silver halide material | Allison Hazel C. Dale, Roger H. Piggin, Michael B. Ledger | 1996-04-30 |
| 5298362 | Photographic high-contrast silver halide materials | Philip J. Coldrick, Nicholas A. Pightling | 1994-03-29 |
| 5013642 | Photographic element | Annabel A. Muenter, Anthony Adin, Richard L. Parton, Nicholas A. Pightling | 1991-05-07 |