Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4400492 | Color-developer for pressure-sensitive recording sheets | Makoto Asano, Saburo Kawashima, Hisamichi Murakami | 1983-08-23 |
| 4379897 | Color-developer for pressure-sensitive sheets | Makoto Asano, Hisamichi Murakami | 1983-04-12 |