Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6174638 | Naphthalenetetracarboxylic acid diimide derivatives and photosensitive materials for electrophotography | Fumio Sugai, Yasufumi Mizuta | 2001-01-16 |
| 6127076 | Naphthalenetetracarboxylic acid diimide derivatives and photosensitive material for electrophotography | Fumio Sugai, Yasufumi Mizuta | 2000-10-03 |