Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9310762 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2016-04-12 |
| 8805237 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2014-08-12 |
| 8494410 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2013-07-23 |
| 8437661 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2013-05-07 |
| 8385775 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2013-02-26 |
| 8170445 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2012-05-01 |
| 8170444 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2012-05-01 |
| 8160477 | Process cartridge and image forming apparatus | Osamu Anan | 2012-04-17 |
| 8155557 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2012-04-10 |
| 8095036 | Process cartridge | Osamu Anan | 2012-01-10 |
| 8090292 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2012-01-03 |
| 8059988 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2011-11-15 |
| 7929881 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno | 2011-04-19 |
| D633137 | Process cartridge | Kazuo Chadani, Tatsuya Suzuki, Masaaki Sato, Hideki Kakuta, Osamu Anan +3 more | 2011-02-22 |
| D631091 | Process cartridge | Kazuo Chadani, Tatsuya Suzuki, Masaaki Sato, Hideki Kakuta, Osamu Anan +3 more | 2011-01-18 |
| D631088 | Process cartridge | Kazuo Chadani, Tatsuya Suzuki, Masaaki Sato, Hideki Kakuta, Osamu Anan +3 more | 2011-01-18 |
| D631089 | Process cartridge | Kazuo Chadani, Tatsuya Suzuki, Masaaki Sato, Hideki Kakuta, Osamu Anan +3 more | 2011-01-18 |
| D631090 | Process cartridge | Kazuo Chadani, Tatsuya Suzuki, Masaaki Sato, Hideki Kakuta, Osamu Anan +3 more | 2011-01-18 |
| 7805093 | Process cartridge and electrophotographic image forming apparatus usable therewith | — | 2010-09-28 |
| 7756441 | Process cartridge and electrophotographic image forming apparatus | Kazuhiko Kanno, Katsuhiko Oba | 2010-07-13 |
| D599846 | Process cartridge | Kojiro Yasui, Tachio Kawai, Koji Yamaguchi, Tadashi Horikawa, Akinobu Hirayama +2 more | 2009-09-08 |
| D599847 | Toner cartridge | Kojiro Yasui, Tachio Kawai, Koji Yamaguchi, Tadashi Horikawa, Akinobu Hirayama +2 more | 2009-09-08 |
| 7155137 | Process cartridge, developing cartridge and developing roller | Kojiro Yasui, Hironobu Isobe, Hiroshi Sato, Seiichi Shinohara, Syuhei Kawasaki | 2006-12-26 |
| 7068965 | Developing cartridge, side cover mounting method and electrophotographic image forming apparatus | Kojiro Yasui, Koji Yamaguchi | 2006-06-27 |
| 6983115 | Developing cartridge and process cartridge having first and second projected portions and image forming apparatus mounting such a developing cartridge | Hironobu Isobe, Koji Yamaguchi | 2006-01-03 |