Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7198470 | Francis turbine | Yasuyuki Enomoto, Sadao Kurosawa, Toshiaki Suzuki, Takanori Nakamura | 2007-04-03 |
| 7128534 | Francis turbine | Yasuyuki Enomoto, Sadao Kurosawa | 2006-10-31 |
| 4475865 | Apparatus for controlling the operation of a water turbine or a pump turbine and a method thereof | Katsuyuki Kawahara | 1984-10-09 |
| 4346304 | Method of controlling operation of Francis type pump turbines | Sachio Tsunoda | 1982-08-24 |