Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812730 | Variable-speed generator/motor system | Hiroto Nakagawa, Yasuteru Oono, Osamu Nagura, Sadahiko Niwa, Yosio Furukawa +1 more | 1989-03-14 |
| 4742288 | Control system for AC motor/generator of secondary AC excitation type | Osamu Sugimoto, Hidenori Sawa, Akio Ito, Hiroshi Sugisaka, Haruo Nohara +1 more | 1988-05-03 |