Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D854691 | Medical oxygen concentrator | Yoshinori Kondo, Masahiro Kamada, Yasunori Hida | 2019-07-23 |
| 6733644 | Gas sensor and gas sensor unit | Hideaki Yagi, Keiichi Ichikawa | 2004-05-11 |
| 6453723 | Gas sensor device | Keiichi Ichikawa, Hideaki Yagi | 2002-09-24 |