Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880767 | Recording material | Shigetoshi Hiraishi, Masahiro Miyauchi, Kazuo Kabashima | 1989-11-14 |
| 4874740 | Thermosensitive recording material | Shigetoshi Hiraishi, Naomasa Koike, Kazuyoshi Kondo | 1989-10-17 |