Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8331828 | Image forming apparatus including a developing device with toner supply passage having a magnetic field formed inside and toner supply control method using the same | — | 2012-12-11 |
| 7925182 | Image forming apparatus | Yasuyuki Ishiguro, Hiroshi Kawahito | 2011-04-12 |
| 6628910 | Toner cartridge for image forming apparatus | Fumito Mizoguchi, Hisashi Kunihiro, Takeshi Wakabayashi, Hiroshi Kawahito, Hideaki Hagihara | 2003-09-30 |
| D468763 | Sensitive drum cartridge for an image forming apparatus | Hisashi Kunihiro, Takeshi Wakabayashi, Hiroshi Kawahito, Fumito Mizoguchi, Hiroshi Kubota | 2003-01-14 |
| D464369 | Toner cartridge | Hisashi Kunihiro, Takeshi Wakabayashi, Hiroshi Kawahito, Fumito Mizoguchi, Hiroshi Kubota | 2002-10-15 |
| D464370 | Toner cartridge | Hisashi Kunihiro, Takeshi Wakabayashi, Hiroshi Kawahito, Fumito Mizoguchi, Hiroshi Kubota | 2002-10-15 |
| D463817 | Developing unit for an image forming apparatus | Hisashi Kunihiro, Takeshi Wakabayashi, Hiroshi Kawahito, Fumito Mizoguchi, Hiroshi Kubota | 2002-10-01 |
| 6421517 | Toner supply device with rotatable agitating element | Toshio Nishino, Yasuyuki Ishiguro, Masatoshi Kaneshige, Haruko Yoneda, Jun Yamaguchi +4 more | 2002-07-16 |
| 6385422 | Developing unit equipped with a toner replenishing device configured with a conveying sheet and rotator | Yasuyuki Ishiguro, Tsutomu Nagata, Masatoshi Kaneshige, Toshio Nishino, Jun Yamaguchi +2 more | 2002-05-07 |
| 6347207 | Developing unit and toner replenishing device with conveying apparatus | Yasuyuki Ishiguro, Toshio Nishino, Yoshinori Otsuka, Jun Yamaguchi, Tsutomu Nagata +2 more | 2002-02-12 |
| 6272298 | Developer cartridge | Jun Yamaguchi, Toshio Nishino, Yoshinori Otsuka, Yasuyuki Ishiguro, Tsutomu Nagata | 2001-08-07 |