Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4974513 | Thermal direct master | Fumiaki Arai | 1990-12-04 |
| 4469771 | Electrophotographic light-sensitive member with thin overlayer | Haruo Hasegawa, Kenji Seki, Hideaki Ema, Masahide Harada | 1984-09-04 |
| 4225648 | Electrophotographic light-sensitive member | Haruo Hasegawa, Kenji Seki, Hideaki Ema, Masahide Harada | 1980-09-30 |