Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5181988 | Method for preventing the discoloration of paper and paper treated to prevent discoloring | Mitsuo Akutsu | 1993-01-26 |
| 5081099 | Heat-sensitive recording material | Mitsuo Akutsu, Keiji Oya | 1992-01-14 |
| 4980336 | Heat-sensitive recording material | Mitsuo Akutsu, Keiji Tabata, Keiji Oya | 1990-12-25 |
| 4944980 | Optical recording material | Mitsuo Akutsu, Keiji Oya | 1990-07-31 |
| 4918046 | Heat-sensitive recording material | Mitsuo Akutsu, Keiji Oya, Keiji Tabata | 1990-04-17 |