Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4665199 | 3-N-isobutylethylamino-6-methyl-7-phenylaminofluoran | Masakichi Yahagi, Tetsuo Igaki, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita | 1987-05-12 |
| 4613879 | Chromogenic recording materials | Masakichi Yahagi, Tetsuo Igaki, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita | 1986-09-23 |