Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5880572 | Variable-speed control method and apparatus for AC motor | Hirokazu Tajima, Hidetoshi Umida | 1999-03-09 |
| 5859521 | Variable speed controller for an AC motor | Hirokazu Tajima, Hidetoshi Umida | 1999-01-12 |
| 5828199 | Variable speed controller for an induction motor | Hirokazu Tajima, Hidetoshi Umida | 1998-10-27 |
| 5734251 | Control apparatus for AC motor | Hirokazu Tajima, Hidetoshi Umida | 1998-03-31 |