Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5254441 | Development inhibitor reflector layers | Glenn T. Pearce, Elizabeth V. Patton, Michael R. Roberts, Ignazio S. Ponticello, Susan C. Gross, deceased +1 more | 1993-10-19 |
| 4273853 | Metal complexes of copolymers comprising vinylimidazole and their use in photographic elements | Ignazio S. Ponticello, Henry J. Sniadoch | 1981-06-16 |
| 4201840 | Photographic film units containing a polymeric mordant which covalently bonds with certain dyes | Gerald A. Campbell, Hyman L. Cohen, Lewis R. Hamilton | 1980-05-06 |
| 4193795 | Photographic film units containing a polymeric mordant which covalently bonds with certain dyes | Gerald A. Campbell, Hyman L. Cohen, Lewis R. Hamilton | 1980-03-18 |