Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6187520 | Photographic high contrast silver halide material and method of processing | Roger H. Piggin, Mark L. Magill | 2001-02-13 |
| 5563021 | Photographic elements with tetra-nuclear merocyanine sensitizers | John M. Higgins, John D. Mee | 1996-10-08 |
| 5342732 | Photographic high contrast silver halide materials | Philip J. Coldrick | 1994-08-30 |