Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |