Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9594017 | Reflective sensor | Hajime Kawai, Hiroyuki Miyamoto | 2017-03-14 |
| 9519059 | Limited-area reflection type optical sensor and electronic device | Masayuki Murota, Hayami Hosokawa, Masashi Sugimoto | 2016-12-13 |
| 9405220 | Optical sensor, image forming device, and method for correcting toner concentration | Hajime Kawai, Junichi Yoshida | 2016-08-02 |
| 8873990 | Toner density sensor and image forming apparatus | Hajime Kawai | 2014-10-28 |