Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6787502 | Guanidine compound and heat sensitive recording material | Hisao Yamada, Mitsuyuki Tsurumi | 2004-09-07 |
| 6720421 | PHENYLURETHANE COMPOUNDS AND METHODS FOR PRODUCING SAME, ASYMMETRIC UREA COMPOUNDS AND METHODS FOR PRODUCING SAME, BARBITURIC ACID DERIVATIVE, AND DIAZO THERMAL RECORDING MATERIAL CONTAINING THE DERIVATIVE | Akinori Fujita, Yohsuke Takeuchi, Daisuke Arioka, Kimi Ikeda, Sachiko Arai | 2004-04-13 |