Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837491 | Motor velocity control apparatus | Mitsuhiko Hirota | 1989-06-06 |
| 4812975 | Emulation method | Shigemi Adachi, Yoshitake Nakaosa | 1989-03-14 |
| 4800327 | Three-phase induction motor control method | Shinichi Kouno | 1989-01-24 |