Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9034551 | Two-component developer | Koh Ishigami, Naoki Okamoto, Yoshinobu Baba | 2015-05-19 |
| 8945805 | Magnetic carrier and two-components developer | Yoshinobu Baba, Koh Ishigami, Naoki Okamoto | 2015-02-03 |
| 8298742 | Method for producing electrophotographic carrier and electrophotographic carrier produced by using the method | Naoki Okamoto, Yoshinobu Baba, Koh Ishigami | 2012-10-30 |
| 8137886 | Magnetic carrier, two-component developer and image forming method | Yoshinobu Baba, Koh Ishigami, Hiroyuki Fujikawa, Kunihiko Nakamura, Nozomu Komatsu +2 more | 2012-03-20 |
| 7939233 | Magnetic carrier and two-component developer | Chika Inoue, Hiroyuki Fujikawa, Koh Ishigami, Kunihiko Nakamura, Nozomu Komatsu +2 more | 2011-05-10 |
| 7927775 | Magnetic carrier and two component developer | Nozomu Komatsu, Koh Ishigami, Hiroyuki Fujikawa, Kunihiko Nakamura, Chika Inoue +2 more | 2011-04-19 |
| 7858283 | Magnetic carrier and two-component developer | Koh Ishigami, Hiroyuki Fujikawa, Kunihiko Nakamura, Nozomu Komatsu, Chika Inoue +2 more | 2010-12-28 |