Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691272 | Carboxylate and heat-sensitive recording material using same | Mansuke Matsumoto, Nobuaki Sasaki, Bunji Sawano, Kazuyoshi Kikkawa | 1997-11-25 |
| 5647896 | Color-developing agents and color-developing sheets | Takeshi Nishimura, Tomoko Kamashita, Masaru Wada, Teruyuki Nagata, Yoshimitsu Tanabe +1 more | 1997-07-15 |