Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6015646 | Electrophotosensitive material and image forming method using the same | Hiroaki Iwasaki, Yukimasa Watanabe, Shyunichi Matsumoto, Maki Uchida | 2000-01-18 |
| 5817810 | Tryptanthrine compounds | Fumio Sugai, Syunichi Matsumoto, Nobuko Akiba, Yukimasa Watanabe, Hirofumi Kawaguchi | 1998-10-06 |