Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6375828 | Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor | Masashi Ando, Noboru Ishida, Satoshi Sugaya, Takafumi Oshima, Norihiko Nadanami +3 more | 2002-04-23 |
| 6344134 | Method for measuring NOx concentration and NOx concentration sensor | Tessho Yamada, Noboru Ishida, Toshitaka Matsuura, Yoshiro Noda, Nobuhiro Hayakawa +4 more | 2002-02-05 |