Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6630275 | Magnetic toner and process cartridge | Hirohide Tanikawa, Tsutomu Onuma, Nobuyuki Okubo, Tsuneo Nakanishi | 2003-10-07 |
| 6589701 | Dry toner, image forming method and process cartridge | Katsuhisa Yamazaki, Tsutomu Onuma, Nobuyuki Okubo, Tsuneo Nakanishi | 2003-07-08 |