Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6770181 | Gas sensor and nitrogen oxide sensor | Kunihiko Nakagaki | 2004-08-03 |
| 6689266 | NOx concentration-measuring apparatus | Kunihiko Nakagaki, Satoshi Nishikawa | 2004-02-10 |
| 6679286 | Ball tap with a water level switch | Hiroyuki Mizuno | 2004-01-20 |