Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4619523 | Toner cleaning apparatus in electrophotography | Masahiko Maeda, Toru Nakazawa, Ryuji Wataki | 1986-10-28 |
| 4574114 | Photosensitive composition for electrophotography having polyvinyl carbazole and silicone oil | Masahiro Tsutsumi, Toru Nakazawa | 1986-03-04 |