Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812729 | Protecting apparatus for secondary excitation type variable speed AC generator/motor | Akio Ito, Hidenori Sawa, Shigeaki Hayashi, Hiroto Nakagawa, Yasuteru Oono +1 more | 1989-03-14 |
| 4766360 | Induction generator/motor system | Eiji Haraguchi, Hiroto Nakagawa, Akira Bando, Yoji Tanaka, Kenichi Ono +1 more | 1988-08-23 |
| 4743826 | Pumping-up generator/motor system and method of operation of the same | Akira Bando, Kenichi Ono, Hiroshi Kashiwazaki, Eiji Haraguchi, Hiroto Nakagawa | 1988-05-10 |
| 4742288 | Control system for AC motor/generator of secondary AC excitation type | Osamu Sugimoto, Tadaatsu Kato, Hidenori Sawa, Akio Ito, Haruo Nohara +1 more | 1988-05-03 |