Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4407924 | Toner complexes for developing electrostatic images | Hisashi Senshu, Kazuhiro Ishikawa, Yoji Kawagishi | 1983-10-04 |
| 4404271 | Metal complexes for use in developers for electrostatic images, charge control function | Yoji Kawagishi, Kazuhiro Ishikawa | 1983-09-13 |
| 4403027 | Toner complexes for developing electrostatic images | Kazuhiro Ishikawa, Yoji Kawagishi | 1983-09-06 |