Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830859 | Charge control agent and toner using same | Keiko Shiraishi, Masanori Suzuki, Yohichiroh Watanabe, Toyoshi Sawada, Tatsuhiko Osaki +2 more | 2004-12-14 |
| 6821698 | Toner for developing electrostatic latent image, toner cartridge, image forming method, process cartridge and image forming apparatus | Toyoshi Sawada, Masanori Suzuki, Yohichiroh Watanabe, Keiko Shiraishi | 2004-11-23 |