Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4774223 | Solvent, ink and coated paper for carbonless copying system | Yoshio Okada, Masahiro Akatsu | 1988-09-27 |
| 4714495 | Solvent, ink and coated paper for carbonless copying system | Yoshio Okada, Masahiro Akatsu | 1987-12-22 |