Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877579 | Multilayer device for detecting bilurubin | Kenichiro Yazawa, Osamu Seshimoto, Masao Kitajima | 1989-10-31 |
| 4870005 | Multilayer analysis element | Yutaka Akiyoshi, Masao Kitajima | 1989-09-26 |