Issued Patents All Time
Showing 51–66 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8452521 | Inter-cylinder air-fuel ratio imbalance determination apparatus for an internal combustion engine | Hiroshi Miyamoto, Hiroshi Sawada, Keiichiro Aoki | 2013-05-28 |
| 8447497 | Apparatus for determining an air-fuel ratio imbalance among cylinders of an internal combustion engine | Hiroshi Miyamoto, Fumihiko Nakamura, Hiroshi Sawada, Toru Kidokoro | 2013-05-21 |
| 8401765 | Inter-cylinder air-fuel ratio imbalance determination apparatus for internal combustion engine | Hiroshi Sawada, Hiroshi Miyamoto, Fumihiko Nakamura, Keiichiro Aoki | 2013-03-19 |
| 8401766 | Inter-cylinder air-fuel ratio imbalance determination apparatus for internal combustion engine | Hiroshi Sawada, Hiroshi Miyamoto, Fumihiko Nakamura, Keiichiro Aoki | 2013-03-19 |
| 8370043 | Apparatus for determining an air-fuel ratio imbalance among cylinders of an internal combustion engine | Toru Kidokoro, Hiroshi Sawada, Fumihiko Nakamura | 2013-02-05 |
| 8260576 | Exhaust gas sensor abnormality diagnostic device | Hiroshi Sawada, Takahiro Joko, Masaya Kawaji | 2012-09-04 |
| 8249794 | Inter-cylinder air-fuel ratio imbalance judgment device for multi-cylinder internal combustion engine | Hiroshi Miyamoto, Hiroshi Sawada, Tatsuya Tsuji, Toru Kidokoro | 2012-08-21 |
| 8214176 | Exhaust gas sensor abnormality diagnostic device | Hiroshi Sawada, Takahiro Joko, Masaya Kawaji | 2012-07-03 |
| 8047064 | Apparatus and method for detecting abnormality of inter-cylinder air-fuel ratio dispersion in multi-cylinder internal combustion engine | Toru Kidokoro, Hiroshi Sawada, Keiji Imamura, Fumihiko Nakamura | 2011-11-01 |
| 8024105 | Apparatus and method for detecting abnormal air-fuel ratio variation among cylinders of multi-cylinder internal combustion engine | Toru Kidokoro, Hiroshi Sawada, Keiji Imamura, Fumihiko Nakamura | 2011-09-20 |
| 7751966 | Abnormality diagnostic device and abnormality diagnostic method for air-fuel ratio sensor | — | 2010-07-06 |
| 7725247 | Abnormality diagnostic device and abnormality diagnostic method for air-fuel ratio sensor | — | 2010-05-25 |
| 7720595 | Abnormality diagnostic device for air-fuel ratio sensor, and control method for the device | — | 2010-05-18 |
| 7597091 | Air-fuel ratio control apparatus and method for an internal combustion engine | Yusuke Suzuki, Toru Kidokoro, Hiroshi Sawada, Fumihiko Nakamura, Keiichiro Aoki | 2009-10-06 |
| 7434450 | Method and apparatus for detecting exhaust gas sensor defect | Kenji Tashiro, Masanobu Kanamaru, Hiroshi Sawada, Masaya Kawaji, Takashi Matsui | 2008-10-14 |
| 6711932 | Abnormality diagnosis system and method for oxygen sensor | Kazuhiro Yamada, Takashi Ogawa | 2004-03-30 |