Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857402 | Magnetic recording medium | Yasuo Nishikawa, Nobuo Tsuji | 1989-08-15 |
| 4183818 | Color electrophotographic liquid developer of colored particles and zinc oxide | Masamichi Sato | 1980-01-15 |