Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9658569 | Image forming apparatus with toner refilling unit | — | 2017-05-23 |
| 8787779 | Image forming apparatus | — | 2014-07-22 |
| 8472847 | Developing device and image forming apparatus | — | 2013-06-25 |
| 7912409 | Toner cartridge | Takuji Matsumoto, Hiromitsu Koizumi, Chiharu Nakajima, Mutsumi Kikuchi, Toyohiko Awano +1 more | 2011-03-22 |
| 7647010 | Toner cartridge and image forming apparatus | Hiromitsu Koizumi, Chiharu Nakajima, Takuji Matsumoto, Toyohiko Awano, Shigeki Nishimura +1 more | 2010-01-12 |
| 7529511 | Toner cartridge | Takuji Matsumoto, Hiromitsu Koizumi, Chiharu Nakajima, Mutsumi Kikuchi, Toyohiko Awano +1 more | 2009-05-05 |
| 7203451 | Development roller, development roller base, development roller manufacturing method, and image forming apparatus | Akitoshi Akaike, Toshiaki Suzuki, Atsuna Saiki, Masahiro Ando | 2007-04-10 |