Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4788482 | Position correcting control system for servomechanism device | Toshihiko Sakai, Hisaaki Hirabayashi, Koichi Sugimoto, Hiroshi Sugai, Hisakazu Ninomiya | 1988-11-29 |
| 4306283 | Power factor improving apparatus for power converter | Hisakatsu Kiwaki, Yoshimitsu Onoda, Katsuaki Suzuki, Tatsuo Horie, Yutaka Suzuki +1 more | 1981-12-15 |
| 4245291 | Electric power converter apparatus for an a.c. electric rolling stock | Yoshio Tsutsui, Hiroaki Ishikawa | 1981-01-13 |