Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7829733 | Change control resin particles and toner for developing electrostatic images | Tetsuji Kihara, Tohru Tsuruhara | 2010-11-09 |
| 7582787 | Charge control agent, manufacturing process thereof, charge control resin particles and toner for developing electrostatic images | Tetsuji Kihara, Tohru Tsuruhara | 2009-09-01 |
| 6762004 | Charge control agent and toner for developing electrostatic images | Shun-ichiro Yamanaka | 2004-07-13 |
| 6534231 | Charge control agent and toner for developing electrostatic images | Shun-ichiro Yamanaka | 2003-03-18 |