Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7978992 | Image forming apparatus executing stabilization process at proper frequency | Kazuo Okunishi, Yoshihiko Yoshizaki, Kohei Hayashi, Hideaki Komiyama, Yasufumi Naitou | 2011-07-12 |
| 7805086 | Image forming apparatus | Tatsutoshi Yamada, Yoshihiko Yoshizaki, Kazuo Okunishi, Hideo Mae, Yoshiaki Takano | 2010-09-28 |
| 7561814 | Image forming apparatus | Tatsutoshi Yamada, Yoshihiko Yoshizaki, Kazuo Okunishi, Hideo Mae, Yoshiaki Takano | 2009-07-14 |
| 7515871 | Image forming system | Hideo Mae, Kazuo Okunishi, Tatsutoshi Yamada, Yoshihiko Yoshizaki, Kou Yamada | 2009-04-07 |
| 7356265 | Image forming apparatus | Tatsutoshi Yamada, Yoshihiko Yoshizaki, Kazuo Okunishi, Hideo Mae, Yoshiaki Takano | 2008-04-08 |
| 7024347 | Transaction conflict testing method and apparatus | Isao Watanabe, Kaoru Suzuki | 2006-04-04 |
| 6891636 | Image forming system | Masazumi Ito | 2005-05-10 |
| 6862107 | Image forming apparatus | — | 2005-03-01 |
| 6404994 | Image forming apparatus and system | Masazumi Ito | 2002-06-11 |
| 6356733 | Image forming apparatus, image forming method and paper transferring apparatus | Hideki Hino, Kazuo Okunishi, Kentaro Nagatani, Koji Shakushi, Yoshiaki Takano | 2002-03-12 |
| 6026252 | Image forming apparatus having a plurality of preliminary processing steps for overcoming an image formation disabled state | — | 2000-02-15 |
| 5920748 | Image forming apparatus capable of estimating toner concentration | Masaki Tanaka, Tetsuya Sakai | 1999-07-06 |
| 5805956 | Electrophotographic image forming apparatus capable of setting image forming conditions and method for setting image forming conditions in an electrophotographic image forming apparatus | Tetsuya Sakai | 1998-09-08 |
| 5778279 | Image forming apparatus estimating a consumable life of a component using fuzzy logic | Tetsuya Sakai | 1998-07-07 |
| 5754920 | Image forming apparatus and image forming method | Masaki Tanaka, Kentaro Katori, Hironobu Nakata | 1998-05-19 |
| 5708917 | Toner replenishment device for an image forming apparatus which employs pixel density and toner density information | Masaki Tanaka, Tetsuya Sakai, Yukihiko Okuno | 1998-01-13 |
| 5708918 | Image formation apparatus that can maintain appropriately toner density in developing device | Yukihiko Okuno, Masaki Tanaka, Naoyoshi Kinoshita, Toshifumi Watanabe | 1998-01-13 |
| 5581221 | Electrophotographic image forming apparatus | Hiroshi Sakakibara, Toshifumi Watanabe, Tetsuya Sakai, Hiroshi Nishikawa | 1996-12-03 |
| 5530530 | Apparatus for measuring developer density | Masaki Tanaka, Tetsuya Sakai, Naoyoshi Kinoshita, Yukihiko Okuno | 1996-06-25 |
| 5302312 | Detergent for contact lens comprising a water-soluble compound and a copolymer of polyhydric alcohol and a cross-linked acrylic acid and a method for washing contact lens | Megumi Nozawa, Shoko Kanda, Kenji Kodama, Hidetake Sendai | 1994-04-12 |
| 4772390 | Water purifying method and system | Ikuo Igami, Yuzuru Katagiri, Michio Inoue, Hisao Tanaka | 1988-09-20 |
| 4347203 | Process for producing acrylic fiber | Koji Mimura, Yasunori Kawachi | 1982-08-31 |