Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870049 | Heat sensitive paper | Toshio Takehara, Hironori Fujii, Koji Uhara, Hirofumi Tanaka | 1989-09-26 |
| 4824822 | Thermosensitive recording material | Hironori Fujii, Toshio Oichi | 1989-04-25 |