Issued Patents All Time
Showing 1–25 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12282283 | Cartridge including photoconductive drum, developing roller, memory and terminal connected to the memory | Masahiro Ishii | 2025-04-22 |
| 11815842 | Developing cartridge including developing roller memory, and terminal and being detachably attachable to drum cartridge including photoconductive drum | Masahiro Ishii | 2023-11-14 |
| 11131955 | Drum cartridge and process cartridge including drum cartridge | Masahiro Ishii | 2021-09-28 |
| 10649390 | Developing cartridge | Masahiro Ishii | 2020-05-12 |
| 10452017 | Developing cartridge including developing roller at one end of developing frame and terminal at another end of developing frame, and memory electrically connected to terminal | Masahiro Ishii | 2019-10-22 |
| 10281867 | Developing cartridge including developing roller at one end of developing frame and terminal at another end of developing frame, and memory electrically connected to terminal | Masahiro Ishii | 2019-05-07 |
| 9606497 | Image forming device with front cover arrangement | Masahiro Ishii | 2017-03-28 |
| 9250606 | Drum unit | Takeyuki Takagi | 2016-02-02 |
| 9058013 | Image forming device and cartridge configuration | Masahiro Ishii | 2015-06-16 |
| 8559843 | Image forming device and cartridge configuration | Masahiro Ishii | 2013-10-15 |
| 8483595 | Image forming device and cartridge | Masahiro Ishii | 2013-07-09 |
| 8233816 | Developer cartridge with memory and terminal | Masahiro Ishii | 2012-07-31 |
| 8073358 | Image forming device and cartridge | Masahiro Ishii | 2011-12-06 |
| 8005392 | Image forming device with pressing members, process cartridge, and developer cartridge | Masahiro Ishii | 2011-08-23 |
| 7953339 | Image forming device and cartridge being electrically connected by terminals | Yasuo Fukamachi, Satoru Ishikawa, Yoshikatsu Kameyama | 2011-05-31 |
| 7941072 | Cartridge | Satoru Ishikawa, Takeyuki Takagi | 2011-05-10 |
| 7840154 | Image forming device and cartridge | Masahiro Ishii | 2010-11-23 |
| 7720430 | Image forming apparatus | Makoto Hasegawa, Tomitake Aratachi, Masamitsu Ukai, Yoshinori Ito, Takashi Shimizu +1 more | 2010-05-18 |
| 7697880 | Process cartridge and image-forming device with brush holder member | Yoshinori Ito | 2010-04-13 |
| D601184 | Photosensitive drum unit | Tatsuo Ogasawara, Yasuo Fukamachi, Satoru Ishikawa, Hirofumi Sato, Satoru Hattori | 2009-09-29 |
| D601183 | Toner cartridge | Satoru Ishikawa, Hirofumi Sato, Satoru Hattori | 2009-09-29 |
| D595343 | Toner cartridge | Satoru Ishikawa, Hirofumi Sato, Satoru Hattori | 2009-06-30 |
| D594899 | Photosensitive drum unit | Tatsuo Ogasawara, Yasuo Fukamachi | 2009-06-23 |
| D590992 | Toner cartridge | Makoto Ishii, Fumikazu Sato | 2009-04-21 |
| D584726 | Portable information terminal unit | — | 2009-01-13 |