Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8076465 | Method for manufacturing charge control agent | Kazuyoshi Kuroda, Masashi Yasumatsu, Kaori Sato, Jun Hikata | 2011-12-13 |
| 7875412 | Positive electrified charge control agent and positive electrified toner for developing electrostatic image | Masashi Yasumatsu | 2011-01-25 |
| 7479360 | Electric charge controlling agent, toner for developing electrostatic charge image containing the same, and method for forming image using the toner | Masashi Yasumatsu, Kazuyoshi Kuroda, Kaori Sato, Jun Hikata, Heihachi Yushina | 2009-01-20 |
| 7094513 | Charge control agent and toner for electrostatic image development | Masashi Yasumatsu, Kazuyoshi Kuroda, Kaori Sato, Jun Hikata, Heihachi Yushina | 2006-08-22 |