Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6084418 | Method for accurately detecting sensor element resistance | Masayuki Takami, Satoshi Haseda, Kazuhiro Okazaki, Koji Jono | 2000-07-04 |
| 5993641 | Air fuel ratio detection using current-limited sensor with different timing and/or magnitude of incremental changes in applied sensor voltage | Kazuhiro Okazaki, Satoshi Haseda, Koji Jono, Masayuki Takami | 1999-11-30 |
| 5935400 | Oxygen concentration detection with sensor current limitation | Masayuki Takami, Satoshi Haseda, Kazuhiro Okazaki | 1999-08-10 |
| 5833836 | Method and device for measuring oxygen concentration | Masayuki Takami, Satoshi Haseda | 1998-11-10 |
| 5810997 | Air-fuel ratio detection with variable detection range | Kazuhiro Okazaki | 1998-09-22 |
| 5781878 | Apparatus and method for diagnosing degradation or malfunction of oxygen sensor | Masayuki Takami, Kazuhiro Okazaki | 1998-07-14 |
| 5719778 | Heater control apparatus for oxygen sensor | Toshihiro Suzumura, Shigenori Isomura, Yukihiro Yamashita, Jun Hasegawa | 1998-02-17 |
| 5547552 | Oxygen concentration detecting apparatus | Jun Hasegawa, Shigenori Isomura, Yasutaka Nakamori | 1996-08-20 |
| 5405521 | Oxygen concentration measuring device | Yasutaka Nakamori, Shigenori Isomura, Toshihiro Suzumura | 1995-04-11 |