Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5290148 | High head pump-turbines | Hiroshi Tanaka, Ichiro Yamagata, Shigeto Fujiki, Yoshikazu Kobayashi, Akira Terasaki | 1994-03-01 |
| 4756663 | Method for operating pumps | Katsunori Shirasu | 1988-07-12 |
| 4537558 | Multi-stage hydraulic machine and control method for a multi-stage hydraulic machine | Shinsaku Sato | 1985-08-27 |
| 4472103 | Multistage hydraulic machines and methods of controlling operations thereof | Ichiro Yamagata | 1984-09-18 |
| 4431370 | Multistage hydraulic machines having air exhausting devices | Kentaro Ichikawa, Ichiro Yamagata | 1984-02-14 |
| 4412779 | Control method for multi-stage hydraulic machine | Shinsaku Sato | 1983-11-01 |
| 4408452 | Pumping-up hydroelectric power plants | — | 1983-10-11 |
| 4406578 | Method for operating pumps | Katsunori Shirasu | 1983-09-27 |
| 4391097 | Pumping up hydroelectric power plant | Kaneo Sugisita | 1983-07-05 |
| 4363597 | Method for operating pumps | Katsunori Shirasu | 1982-12-14 |
| 4346304 | Method of controlling operation of Francis type pump turbines | Kaneo Sugishita | 1982-08-24 |
| 4344735 | Method of controlling two-stage hydraulic pump-turbines | — | 1982-08-17 |
| 4318004 | Method of pumping up electric power generation and an apparatus therefor | — | 1982-03-02 |
| 4280788 | Multistage hydraulic machine system and a method for controlling the operation thereof | Ichiro Yamagata | 1981-07-28 |
| 4255078 | Method of controlling operation of multistage hydraulic machines | Masaharu Nonaka | 1981-03-10 |
| 4218182 | Casings of hydraulic machines | Kiyoshi Harada | 1980-08-19 |
| 4207023 | Multistage hydraulic machine | — | 1980-06-10 |