Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11230998 | Ventilation apparatus of internal combustion engine | Masayuki Chiba, Satoko Tofukuji, Kenji Ikeda | 2022-01-25 |
| 10369498 | Oil deterioration suppressing apparatus | Hideto Morishita, Yasuhiro Saito, Ippei Fukutomi, Motoichi Murakami, Yasuhiro Ohmiya +3 more | 2019-08-06 |
| 10145275 | Oil deterioration prevention device | Yasuhiro Saito, Hideto Morishita, Ippei Fukutomi, Motoichi Murakami, Masatoshi Hiyoshi +1 more | 2018-12-04 |
| 10119436 | Internal combustion engine | Satoko Tofukuji, Kenji Ikeda | 2018-11-06 |
| 10112132 | Oil additive and oil filter | Ippei Fukutomi, Motoichi Murakami, Hideto Morishita, Yasuhiro Saito | 2018-10-30 |
| 9844743 | Oil deterioration prevention device | Yasuhiro Saito, Hideto Morishita, Ippei Fukutomi, Motoichi Murakami, Masatoshi Hiyoshi +1 more | 2017-12-19 |
| 8646431 | Vehicle provided with valve-stop-mechanism-equipped internal combustion engine | Akio Kidooka | 2014-02-11 |