Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7704358 | Oxygen sensor | Akira Uchikawa, Shoichi Sakai, Goji Matsumoto | 2010-04-27 |
| 7655122 | Oxygen concentration detecting element | Shoichi Sakai, Junji Onozuka, Goji Matsumoto | 2010-02-02 |
| 7370545 | Oxygen sensor | Akira Uchikawa, Masao Tsukada | 2008-05-13 |
| 7258772 | Oxygen sensor and method of manufacturing same | Shoichi Sakai | 2007-08-21 |
| 7258771 | Air/fuel ratio detection apparatus | Shigeo Isitani, Yasuji Orimo, Chiharu Katsuyama | 2007-08-21 |
| 7122103 | Air/fuel ratio detection apparatus | Shigeo Isitani, Yasuji Orimo, Chiharu Katsuyama | 2006-10-17 |
| 6918385 | Air-fuel ratio detecting apparatus of engine and method thereof | Shigeo Ohkuma | 2005-07-19 |
| 6889536 | Air/fuel-ratio detecting apparatus | Shoichi Sakai | 2005-05-10 |
| 6332966 | Air/fuel ratio detecting arrangement | Shoichi Sakai, Toshiaki Inoue | 2001-12-25 |