Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830859 | Charge control agent and toner using same | Keiko Shiraishi, Masanori Suzuki, Yohichiroh Watanabe, Takuya Saito, 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 | Masanori Suzuki, Yohichiroh Watanabe, Keiko Shiraishi, Takuya Saito | 2004-11-23 |
| 6716561 | Toner for developing electrostatic latent image and image forming method using same | Keiko Shiraishi, Masanori Suzuki, Yohichiroh Watanabe, Masahide Yamashita, Akihiro Kotsugai +1 more | 2004-04-06 |