Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11566597 | Startup method of francis turbine and francis turbine | Masahiko Nakazono | 2023-01-31 |
| 11359596 | Francis-type turbine runner and Francis-type turbine | Takero Mukai, Masahiko Nakazono, Toshifumi Kurokawa, Kotaro Tezuka | 2022-06-14 |