Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4988811 | 5-(1,2,4)-triazolyl-S-triazines | Luigi Valbusa, Enzo Coraluppi, Mario Tavella | 1991-01-29 |
| 4636457 | Process for forming direct positive images, direct positive silver halide elements, compositions and compounds as characteristics feature of such processes and elements | Luigi Valbusa, Enzo Coraluppi, Mario Tavella | 1987-01-13 |
| 4262087 | Photographic elements containing 5-pyrazolone magenta couplers | — | 1981-04-14 |
| 4182630 | Pivalyl-acetanilide couplers and photographic elements including them | — | 1980-01-08 |