Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4642357 | Chromogenic recording materials | Masakichi Yahagi, Tetsuo Igaki, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita | 1987-02-10 |
| 4590498 | Chromogenic recording materials | Masakichi Yahagi, Tetsuo Igaki, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita | 1986-05-20 |