Issued Patents All Time
Showing 51–53 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818668 | Silver halide color photographic materials | Seiji Ichijima, Hideo Usui | 1989-04-04 |
| 4741994 | Silver halide color photographic material | Seiji Ichijima, Hideo Usui | 1988-05-03 |
| 4678743 | Silver halide color photographic material | Seiji Ichijima, Hideo Usui | 1987-07-07 |