Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825444 | Laser emission material | Nobuo Johna, Tsutomu Ishikawa, Masayoshi Nakamura | 1989-04-25 |
| 4812220 | Enzyme sensor for determining a concentration of glutamate | Takeaki Iida | 1989-03-14 |