Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6228547 | Bis(3,4-methylenedioxyphenylamino) derivatives and electrophotographic photoreceptor containing the derivatives | Tohru Kobayashi, Yoshimasa Matsushima, Mamoru Yamada, Hiroshi Sugiyama, Toshimitsu Hagiwara | 2001-05-08 |
| 6150065 | Electrophotographic photoreceptor | Tohru Kobayashi, Mamoru Yamada, Yoshimasa Matsushima, Hiroshi Sugiyama, Toshimitsu Hagiwara +1 more | 2000-11-21 |
| 5182324 | Alcoholic marking ink composition | Takahiro Osada | 1993-01-26 |