Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5541040 | Positive type color light sensitive material and the image forming process therefor | Susumu Okawauchi, Yasuo Tosaka, Yoshiyuki Nonaka | 1996-07-30 |
| 5480767 | Silver halide color photographic light-sensitive material and image-forming process | Yasuo Tosaka, Yoshiyuki Nonaka | 1996-01-02 |
| 5436116 | Silver halide color photographic photosensitive material and color proof preparation process | Susumu Ohkawachi, Yasuo Tosaka, Yoshiyuki Nonaka | 1995-07-25 |
| 5436117 | Positive type silver halide color photographic light-sensitive material for color proofing use | Susumu Ohkawauchi, Yasuo Tosaka, Yoshiyuki Nonaka | 1995-07-25 |