Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6923902 | 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, Norihiko Nadanami, Takaki Otsuka +3 more | 2005-08-02 |
| 6886412 | Ultrasonic-wave propagation-time measuring method and gas concentration sensor | Keigo Banno, Hideki Ishikawa, Yoshikuni Sato, Noboru Ishida | 2005-05-03 |