Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4215196 | Photographic elements in which gelatin silver halide layers contain polymers with semicarbazone or alkoxy carbonyl hydrazone groups | Walter F. De Winter, Arthur H. De Cat, Godfried A. Kockelbergh | 1980-07-29 |
| 4186010 | Silver halide elements with polymers containing ketoiminoguanidinium groups | Raymond Florens | 1980-01-29 |