Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5053303 | Electrophotographic element having separate charge generating and charge transporting layers | Soichi Hasegawa, Shuichi Arai | 1991-10-01 |
| 5049465 | Electrophotographic photosensitive material and method of preparing same | Soichi Hasegawa, Shuichi Arai | 1991-09-17 |