Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7022444 | Color image forming method and apparatus, and microcapsule toner for use therewith | Kazumasa Kawada, Shigeru Shimizu, Isao Ebisawa, Shuichi Yamasaki, Yoshiyuki Matsuoka +6 more | 2006-04-04 |
| 6463231 | Printer device | Toshihiko Numazu, Shigeru Hirosawa, Tetsushi Kurokawa, Kazuhiro Kameyama, Yasuhiro Tsuyuki +2 more | 2002-10-08 |
| D452263 | Photosensitive drum cartridge for an electronic copying machine | Moriyuki Kouroku, Kouichi Kamei | 2001-12-18 |
| D446808 | Toner cartridge for an electronic copying machine | Moriyuki Kouroku, Kouichi Kamei | 2001-08-21 |
| D424608 | Photosensitive drum casing for an electronic copying machine | Takao Yorifuji, Moriyuki Kouroku | 2000-05-09 |
| 6032012 | Developing device, image forming unit and color image forming apparatus, both having the developing device | Takeo Hirono, Tatsumi Shimanari, Takao Yorifuji, Moriyuki Kouroku, Yoshiharu Abe +2 more | 2000-02-29 |
| 5999776 | Contact charging member, image forming unit including the contact charging member and electrophotographic image forming apparatus including the image forming unit | Tetsuya Abe, Masaki Kanasugi, Takao Yorifuji, Moriyuki Kouroku | 1999-12-07 |
| 5970286 | Image forming apparatus and image forming unit with an improved phase adjustment means | Toshihiko Numazu, Takao Yorifuji, Moriyuki Kouroku, Yoshiharu Abe, Yasushi Nakamura | 1999-10-19 |
| 5808649 | Image forming apparatus for color image forming | Tatsumi Shimanari, Takao Yorifuji, Moriyuki Kouroku | 1998-09-15 |
| 5781841 | Toner collector and image forming unit having toner collector bag | Moriyuki Kouroku, Tatsumi Shimanari, Takao Yorifuji, Yoshiharu Abe | 1998-07-14 |
| 5128724 | Developer restoring unit in an image forming apparatus | Mitsuo Hayashi, Takao Yorifuji, Masatoshi Maruyama | 1992-07-07 |
| 4687318 | Copying apparatus | Sohei Shibasaki, Yasumasa Iwasaki | 1987-08-18 |
| 4648706 | Image reproduction apparatus | Sohei Shibasaki, Yasumasa Iwasaki, Koichi Arai, Koji Maruyama, Tatsumi Shimanari | 1987-03-10 |