Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812729 | Protecting apparatus for secondary excitation type variable speed AC generator/motor | Akio Ito, Hiroshi Sugisaka, Shigeaki Hayashi, Hiroto Nakagawa, Yasuteru Oono +1 more | 1989-03-14 |
| 4742288 | Control system for AC motor/generator of secondary AC excitation type | Osamu Sugimoto, Tadaatsu Kato, Akio Ito, Hiroshi Sugisaka, Haruo Nohara +1 more | 1988-05-03 |