Issued Patents All Time
Showing 1–25 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12359602 | SOx concentration acquiring apparatus of internal combustion engine | Kazuhisa Matsuda, Keiichiro Aoki | 2025-07-15 |
| 12291985 | Control device of exhaust sensor | Mie Kato, Daisuke Kawai | 2025-05-06 |
| 11319889 | Abnormality diagnosis system of downstream side air-fuel ratio detection device | Yoshiyuki KITAZUME, Keiichiro Aoki, Yasutaka Kamiya | 2022-05-03 |
| 11319890 | Abnormality detection device for air-fuel ratio detection device | Yoshiyuki KITAZUME, Keiichiro Aoki, Yasutaka Kamiya | 2022-05-03 |
| 11199148 | Control device for exhaust sensor | Keiichiro Aoki, Yasutaka Kamiya | 2021-12-14 |
| 10934958 | Air-fuel ratio detection device and air-fuel ratio detection method | Keiichiro Aoki, Keisuke Mizutani | 2021-03-02 |
| 10794857 | Gas detector | Keiichiro Aoki, Kazuhisa Matsuda | 2020-10-06 |
| 10712323 | Control device for gas detector and control method for gas detector | Keiichiro Aoki, Keigo Mizutani, Kazuhisa Matsuda | 2020-07-14 |
| 10690629 | Gas detection device | Kazuhisa Matsuda, Keiichiro Aoki | 2020-06-23 |
| 10605765 | Gas detection device | Keiichiro Aoki, Kazuhisa Matsuda | 2020-03-31 |
| 10551364 | Control system and control method for internal combustion engine | Tatsuhiro Hashida | 2020-02-04 |
| 10444181 | Sulfur oxide detection system | Kazuhisa Matsuda, Keiichiro Aoki | 2019-10-15 |
| 10352254 | Internal combustion engine control device | — | 2019-07-16 |
| 10191007 | Sulfur oxides detection system | Kazuhisa Matsuda, Keiichiro Aoki | 2019-01-29 |
| 10184913 | Abnormality diagnosis system of a gas sensor | Keiichiro Aoki, Koji Ide, Go Hayashita, Toyoharu Kaneko, Tatsuhiro Hashida | 2019-01-22 |
| 10006380 | Control device for internal combustion engine | Mie Kato, Takahiro Tsukagoshi, Kazuhisa Matsuda | 2018-06-26 |
| 9982622 | Control system and control method for internal combustion engine | Tatsuhiro Hashida | 2018-05-29 |
| 9970371 | Control apparatus and control method for internal combustion engine | Michihiro Wakimoto, Keigo Mizutani, Tatsuhiro Hashida, Keiichiro Aoki | 2018-05-15 |
| 9891188 | Gas concentration detecting device | Tatsuhiro Hashida, Keiichiro Aoki | 2018-02-13 |
| 9851323 | Abnormality determination device of fuel property sensor and method of determining abnormality of the same | Keiichiro Aoki | 2017-12-26 |
| 9753005 | SOx concentration detection device | Tetsuya Kato, Shinya Teranishi, Keiichiro Aoki | 2017-09-05 |
| 9732659 | SOx concentration detection device of internal combustion engine | Keigo Mizutani, Shinya Teranishi, Keiichiro Aoki, Toyoharu Kaneko, Tatsuhiro Hashida | 2017-08-15 |
| 9488140 | Intake air volume measuring device for internal combustion engine | Masahiro Mori, Takeshi Sano, Hiroshi Yamamoto | 2016-11-08 |
| 8904756 | Exhaust emission control system of internal combustion engine | Kimikazu Yoda, Takaaki Itou, Keisuke Sano | 2014-12-09 |
| 8884250 | Biofuel degradation sensor based on fluorescence measurements | Shuntaro Yoshida, Noriyasu Amano, Mie Sasai, Keiichiro Aoki | 2014-11-11 |