Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816696 | Variable-speed pumped-storage power generating system | Takao Kuwabara, Akira Brando, Yasuteru Oono, Shigeaki Hayashi, Isao Yokoyama +1 more | 1989-03-28 |
| 4743827 | Variable speed pumping-up electrical power system | Junichi Shiozaki, Takao Kuwabara, Akira Bando, Kenichi Ono, Ichiro Hitomi +2 more | 1988-05-10 |
| 4629393 | Method of operating multistage hydraulic machinery | Takao Kuwabara | 1986-12-16 |