Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5302194 | Heat sensitive color developing material | Hisaki Tanabe, Yasuhiko Nakae, Yoshio Eguchi | 1994-04-12 |
| 5288686 | Heat sensitive color developing material | Hisaki Tanabe, Yasuhiko Nakae, Yoshio Eguchi | 1994-02-22 |