Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6630275 | Magnetic toner and process cartridge | Kaori Hiratsuka, Hirohide Tanikawa, Nobuyuki Okubo, Tsuneo Nakanishi | 2003-10-07 |
| 6589701 | Dry toner, image forming method and process cartridge | Katsuhisa Yamazaki, Nobuyuki Okubo, Tsuneo Nakanishi, Kaori Hiratsuka | 2003-07-08 |
| 6541174 | Method using toner and developer for developing electrostatic image | Hirohide Tanikawa, Toshiaki Nakahara, Keita Nozawa, Kazuyoshi Hagiwara, Minoru Shimojo +2 more | 2003-04-01 |
| 6537716 | Toner for developing electrostatic images and heat fixing method | Shinji Doi, Hirohide Tanikawa, Hiroaki Kawakami, Masatsugu Fujiwara | 2003-03-25 |