Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7507514 | Toner and manufacturing method of the same | Meizo Shirose, Asao Matsushima | 2009-03-24 |
| 7402367 | Electrostatic image developing toner and image forming method | Tomoe Kitani, Asao Matsushima, Hiroyuki Kozuru | 2008-07-22 |
| 6994943 | Toner for developing static latent image, producing method thereof and image forming method | Asao Matsushima, Hiroyuki Kozuru, Tomoe Kitani | 2006-02-07 |
| 6951702 | Toner for developing static image, production method therefor and image forming method | Asao Matsushima, Hiroyuki Kozuru, Tomoe Kitani | 2005-10-04 |
| 6689522 | Image forming method and electrostatic image developing toner | Hiroshi Yamazaki, Ken Ohmura, Akihiko Itami, Meizo Shirose, Asao Matsushima +1 more | 2004-02-10 |