Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5739078 | Fluoran compounds, intermediates and color forming recording materials | Takehiro Sato, Shigemi Suga, Tomoya Hidaka, Toru Kawabe, Mamoru Aizawa +2 more | 1998-04-14 |
| 4954631 | Fluoran compounds and color forming recording materials using same | Takeo Obitsu, Yutaka Ohnishi, Shinji Yoshinaka, Minoru Koguchi, Nobuyuki Hirai | 1990-09-04 |
| 4826806 | Fluoran compounds and color forming recording materials using same | Takeo Obitsu, Yutaka Ohnishi, Shinji Yoshinaka, Minoru Koguchi, Nobuyuki Hirai | 1989-05-02 |