Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886341 | Diffraction grating having a plurality of different grating constants | Konosuki Oishi | 1989-12-12 |
| 4795707 | Electrochemical sensor having three layer membrane containing immobilized enzymes | Yasusi Niiyama | 1989-01-03 |