Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685964 | Oxygen concentration sensor element | Isao Watanabe, Masaya Fujimoto | 1997-11-11 |
| 5676811 | Air-fuel ratio detecting device | Daisuke Makino, Hisayoshi Ohta, Keigo Mizutani, Masataka Naito, Masanori Yamada +1 more | 1997-10-14 |
| 5593558 | Oxygen concentration detector | Hiroshi Sugino, Yasumichi Hotta, Namitsugu Fujii, Hiromi Sano | 1997-01-14 |