Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6787502 | Guanidine compound and heat sensitive recording material | Naoto Yanagihara, Hisao Yamada | 2004-09-07 |
| 6749908 | Multicolor heat-sensitive recording material | — | 2004-06-15 |