Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7912409 | Toner cartridge | Yasufumi Kayahara, Takuji Matsumoto, Hiromitsu Koizumi, Mutsumi Kikuchi, Toyohiko Awano +1 more | 2011-03-22 |
| 7647010 | Toner cartridge and image forming apparatus | Hiromitsu Koizumi, Takuji Matsumoto, Toyohiko Awano, Shigeki Nishimura, Mutsumi Kikuchi +1 more | 2010-01-12 |
| 7643777 | Toner cartridge | Takuji Matsumoto, Hiromitsu Koizumi | 2010-01-05 |
| 7529511 | Toner cartridge | Yasufumi Kayahara, Takuji Matsumoto, Hiromitsu Koizumi, Mutsumi Kikuchi, Toyohiko Awano +1 more | 2009-05-05 |
| D549274 | Toner cartridge | Hiromitsu Koizumi | 2007-08-21 |
| D548276 | Toner cartridge | Hiromitsu Koizumi | 2007-08-07 |
| D548277 | Toner cartridge | Hiromitsu Koizumi | 2007-08-07 |