Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637949 | Piezoelectric actuator sensitive to reducing gas | Yuji Isogai, Hiroaki Yanagida | 1997-06-10 |
| 5602324 | Gas sensor and gas discriminating method | Hiroaki Yanagida, Kazuyasu Hikita | 1997-02-11 |