Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4981774 | Silver halide photographic light-sensitive material | Akiyoshi Tai, Shun Takada | 1991-01-01 |
| 4980274 | Silver halide photographic light-sensitive material | Akiyoshi Tai, Shun Takada | 1990-12-25 |