Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5252989 | Apparatus for forming a secondary image on a photographic printed paper | Sota Kawakami, Takahiro Ogawa, Tatsuichi Maehashi | 1993-10-12 |
| 5028506 | Photoreceptor for electrography with an ammonium salt | Hiroshi Yamazaki, Sota Kawakami, Masataka Takimoto, Koyoshi Sawada | 1991-07-02 |
| 4842971 | Photoreceptor for electrophotography having a hydroxystyrene subbing layer | Akira Kinoshita, Kiyoshi Sawada | 1989-06-27 |