Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4743580 | Heat-sensitive recording materials | Masao Matsukawa, Hirokazu Hirata | 1988-05-10 |
| 4622566 | Heat-sensitive recording material | Masao Matsukawa, Hirokazu Hirata, Masaru Mishima | 1986-11-11 |
| 4570169 | Heat-sensitive recording materials | Masao Matsukawa, Masaru Mishima | 1986-02-11 |