Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6187493 | Electrophotosensitive material | Masato Katsukawa, Akiyoshi Urano, Mitsuo Ihara, Ichiro Yamazato, Yuka Nakamura | 2001-02-13 |
| 5780194 | Electrophotosensitive material | Masato Katsukawa, Akiyoshi Urano, Mitsuo Ihara, Ichiro Yamazato, Yuka Nakamura | 1998-07-14 |