Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4325625 | Electrophotographing method | Kaoru Ohyoshi, Masaji Nishikawa, Eiichi Sato, Norio Mizukami, Akira Shimizu +4 more | 1982-04-20 |
| 4230786 | Electrographic process of imaging by modulation of ions | Masaji Nishikawa, Hiroshi Tsuda, Shigo Fujie, Masazi Kanamaru, Shosaku Koseki | 1980-10-28 |
| 4187800 | Device for manufacturing photosensitive screen | Masaji Nishikawa, Eiichi Sato | 1980-02-12 |