Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7929884 | Image forming apparatus, developing unit, and computer system | Ken Yoshizuka, Yoichiro Irie | 2011-04-19 |
| 7646994 | Image forming apparatus developing unit and computer system | Ken Yoshizuka, Yoichiro Irie | 2010-01-12 |
| 7469117 | Image forming apparatus, developing unit, and computer system | Ken Yoshizuka, Yoichiro Irie | 2008-12-23 |
| 7340201 | Image formation device, development unit, and computer system | Ken Yoshizuka, Yoichiro Irie | 2008-03-04 |
| 7313343 | Image forming apparatus | Kuniaki Tanaka, Nobuyuki Mizushima, Hiroshi Miyazawa, Keiichi Taguchi | 2007-12-25 |
| 7187893 | Image transfer unit having an intermediate transfer belt to which a toner image is applied | Akira Kubota, Tatsuro Osawa, Nobumasa Abe, Takehiko Okamura, Hiroshi Ito +2 more | 2007-03-06 |
| 7092660 | Image forming apparatus | Kuniaki Tanaka, Keiichi Taguchi, Hiroshi Miyazawa, Nobuyuki Mizushima | 2006-08-15 |
| 6957032 | Intermediate transfer unit having a primary transfer member and a secondary transfer roller | Akira Kubota, Tatsuro Osawa, Nobumasa Abe, Takehiko Okamura, Hiroshi Ito +2 more | 2005-10-18 |
| 6856782 | Intermediate transfer unit having a primary and a secondary transfer member | Akira Kubota, Tatsuro Osawa, Nobumasa Abe, Takehiko Okamura, Hiroshi Ito +2 more | 2005-02-15 |
| 6768880 | Image forming apparatus | Kazuhiko Iida | 2004-07-27 |
| 6731899 | Intermediate transfer unit | Akira Kubota, Tatsuro Osawa, Nobumasa Abe, Takehiko Okamura, Hiroshi Ito +2 more | 2004-05-04 |
| 6605401 | Toner and development unit and image forming apparatus using the same | Hideki Okada, Kazuhiro Ichikawa, Hiroshi Ito | 2003-08-12 |
| 6408158 | Intermediate transfer unit | Akira Kubota, Tatsuro Osawa, Nobumasa Abe, Takehiko Okamura, Hiroshi Ito +2 more | 2002-06-18 |
| 6358654 | Toner and development unit and image forming apparatus using the same | Hiroshi Ito, Hideki Okada, Kazuhiro Ichikawa | 2002-03-19 |
| 6281963 | Image forming apparatus | Takehiko Okamura, Hiroshi Ito | 2001-08-28 |
| 6223015 | Recording medium carrier system intermediate transfer unit | Akira Kubota, Tatsuro Osawa, Nobumasa Abe, Takehiko Okamura, Hiroshi Ito +2 more | 2001-04-24 |
| 6173139 | Recording medium carrier system having a paper feed unit, a transfer unit, a fixing unit and a paper ejecting unit constructed as independent units | Akira Kubota, Tatsuro Osawa, Nobumasa Abe, Takehiko Okamura, Hiroshi Ito +2 more | 2001-01-09 |
| 6146802 | Toner and development unit and image forming apparatus using the same | Hideki Okada, Kazuhiro Ichikawa, Hiroshi Ito | 2000-11-14 |
| 6112038 | Image forming apparatus having a stable potential at a first transfer point | — | 2000-08-29 |
| 6035154 | Image forming apparatus | Takehiko Okamura, Toshihiko Yamazaki | 2000-03-07 |
| 5729811 | Contact transfer device and image forming equipment | Tatsuro Ohsawa, Yasuhito Hirashima, Yoshiro Koga | 1998-03-17 |
| 5563693 | Contact transfer device and image forming equipment | Tatsuro Ohsawa, Yasuhito Hirashima, Yoshiro Koga | 1996-10-08 |
| 5151741 | Electrophoretic imaging device | Toshiaki Kakutani, Nobuyuki Yanase, Hitoshi Fukushima | 1992-09-29 |