Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10788786 | Image forming apparatus | — | 2020-09-29 |
| 10551794 | Developing device including exhaust duct and filter and image forming apparatus including developing device | — | 2020-02-04 |
| 8099014 | Image forming apparatus | Masanobu Deguchi, Yasuyuki Ishiguro | 2012-01-17 |
| 7925182 | Image forming apparatus | Yasuyuki Ishiguro, Hiroshi Tanisawa | 2011-04-12 |
| 7805096 | Toner conveying device, toner supply device and image forming apparatus using these | Yasuyuki Ishiguro, Takeshi Okuda, Takeshi Wakabayashi, Jun Yamaguchi | 2010-09-28 |
| 7627274 | Toner conveying device, toner supply device and image forming apparatus using these | Yasuyuki Ishiguro, Takeshi Okuda, Takeshi Wakabayashi, Jun Yamaguchi | 2009-12-01 |
| 7542704 | Toner carrier apparatus, toner feeding apparatus, and image forming apparatus | Takeshi Okuda, Yasuyuki Ishiguro, Takeshi Wakabayashi, Jun Yamaguchi | 2009-06-02 |
| 7505711 | Waste developer collecting device and image forming apparatus provided therewith | Yuhsuke Yoshimoto, Yasuyuki Ishiguro, Hiroshi Kubota, Jun Yamaguchi | 2009-03-17 |
| 7502576 | Development apparatus for mixing recycled developer with toner in a toner supply path and image forming apparatus having same | Hiroshi Kubota, Yasuyuki Ishiguro, Takeshi Takayama, Jun Yamaguchi, Yuhsuke Yoshimoto | 2009-03-10 |
| 7440717 | Developing apparatus and image forming apparatus with toner supply portion opening/closing mechanism | Hiroshi Kubota, Yasuyuki Ishiguro, Jun Yamaguchi, Yusuke Yoshimoto | 2008-10-21 |
| 6628910 | Toner cartridge for image forming apparatus | Hiroshi Tanisawa, Fumito Mizoguchi, Hisashi Kunihiro, Takeshi Wakabayashi, Hideaki Hagihara | 2003-09-30 |
| D468763 | Sensitive drum cartridge for an image forming apparatus | Hisashi Kunihiro, Hiroshi Tanisawa, Takeshi Wakabayashi, Fumito Mizoguchi, Hiroshi Kubota | 2003-01-14 |
| D464369 | Toner cartridge | Hisashi Kunihiro, Hiroshi Tanisawa, Takeshi Wakabayashi, Fumito Mizoguchi, Hiroshi Kubota | 2002-10-15 |
| D464370 | Toner cartridge | Hisashi Kunihiro, Hiroshi Tanisawa, Takeshi Wakabayashi, Fumito Mizoguchi, Hiroshi Kubota | 2002-10-15 |
| D463817 | Developing unit for an image forming apparatus | Hisashi Kunihiro, Hiroshi Tanisawa, Takeshi Wakabayashi, Fumito Mizoguchi, Hiroshi Kubota | 2002-10-01 |
| 6360066 | Developing apparatus having stirring shafts with elliptic stirring vanes | Keiji Kato, Toshio Nishino, Yasuyuki Ishiguro, Jun Yamaguchi, Tsutomu Nagata | 2002-03-19 |
| 5619312 | Developing device with developer-supplying mechanism | Shintarou Hatano, Yoshiki Ichikawa, Fumito Mizoguti, Masahiro Tsuji, Takao Hiroyasu +5 more | 1997-04-08 |
| 5243389 | Toner hopper having stirring and feeding rollers | Naoyuki Yamane, Keiji Kato, Katsuzo Uchida, Miki Demoto, Hisashi Kunihiro +4 more | 1993-09-07 |
| 5175587 | Developing apparatus having a detachable developer cartridge | Keiji Kato, Toshiyuki Kurosaka, Hideaki Hagihara | 1992-12-29 |