Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5135776 | Method for producing a heat-sensitive recording material | Kazuo Kojima | 1992-08-04 |
| 5019548 | Heat sensitive recording material | Toshitake Suzuki, Fumio Seyama, Toranosuke Saito, Masakatu Kitani, Takashi Ishibashi | 1991-05-28 |
| 4950637 | Heat sensitive recording material | Toshitake Suzuki, Yoshiyuki Nukushina, Masato Kawamura | 1990-08-21 |
| 4668291 | Method for the production of a dispersion of colorless chromogenic material | Takuji Tuji | 1987-05-26 |
| 4623557 | Process for the production of heat-sensitive recording materials | Tsunefumi Yamori, Hironari Fujioka | 1986-11-18 |