Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6218065 | Toner having negative triboelectric chargeability and developing method | Hirohide Tanikawa, Makoto Unno, Makoto Kanbayashi | 2001-04-17 |
| 6040103 | Toner for developing electrostatic image and image forming method | Manabu Ohno, Satoshi Matsunaga, Tadashi Doujo | 2000-03-21 |
| 4673630 | Photoconductive film and electrophotographic photosensitive member contains azulenium salt | Kazuhara Katagiri, Yoshihiro Oguchi, Kozo Arao, Makoto Kitahara, Yoshio Takasu | 1987-06-16 |
| 4629670 | Photoconductive film of azulenium salt and electrophotographic photosensitive member | Kazuharu Katagiri, Yoshihiro Oguchi, Kozo Arao, Yoshio Takasu | 1986-12-16 |