Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11739684 | Engine | Masayoshi Doui | 2023-08-29 |
| 11598272 | Engine | Masayoshi Doui | 2023-03-07 |
| 11492960 | Engine | Masayoshi Doui | 2022-11-08 |
| 11428177 | Engine device | Ryoichi Hagiwara, Kazuteru TOSHINAGA, Masayoshi Doi, Tatsuro Ohsara, Osamu Yamagishi | 2022-08-30 |
| 11187163 | Engine | Masayoshi Doui | 2021-11-30 |
| 11111866 | Engine device | Ryoichi Hagiwara, Kazuteru TOSHINAGA, Masayoshi Doi, Tatsuro Ohsara, Osamu Yamagishi | 2021-09-07 |
| 11066984 | Engine | Masayoshi Doul | 2021-07-20 |
| 10738687 | Engine | Masayoshi Doui | 2020-08-11 |
| 10690069 | Engine device | Ryoichi Hagiwara, Kazuteru TOSHINAGA, Masayoshi Doi, Tatsuro Ohsara, Osamu Yamagishi | 2020-06-23 |
| 10626809 | Engine device | Koichi Hirose, Tatsuro Ohsara | 2020-04-21 |
| 10393035 | Engine device | Ryoichi Hagiwara, Masayoshi Doi, Tatsuro Ohsara, Osamu Yamagishi | 2019-08-27 |
| 10378461 | Engine device | Ryoichi Hagiwara, Masayoshi Doi, Tatsuro Ohsara, Osamu Yamagishi | 2019-08-13 |
| 10337421 | Engine device | Koichi Hirose, Tatsuro Ohsara | 2019-07-02 |