Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6232027 | Toner having negative triboelectric chargeability and image forming method | Satoshi Matsunaga, Toshiaki Nakahara, Yuichi Mizoh, Hirohide Tanikawa, Tadashi Doujo +1 more | 2001-05-15 |
| 6156470 | Toner having negative triboelectric chargeability and image forming method | Satoshi Matsunaga, Hirohide Tanikawa | 2000-12-05 |
| 5976752 | Toner and image forming method | Satoshi Matsunaga, Koichi Tomiyama, Yuichi Mizoh, Keita Nozawa, Tadashi Doujo +2 more | 1999-11-02 |