Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5500581 | High-efficiency power supply control apparatus for variable-speed induction motor | Takefumi Hatanaka | 1996-03-19 |
| 5481451 | AC-to-AC power inverter apparatus functioning without smoothing capacitor, and control method thereof | — | 1996-01-02 |
| 5442271 | Induction motor control apparatus providing high efficiency with rapid response to changes in load torque | Takefumi Hatanaka | 1995-08-15 |
| 5241256 | Method and apparatus for controlling the supply of power to an induction motor to maintain high efficiency under varying load conditions | Takefumi Hatanaka | 1993-08-31 |
| 5204606 | Induction motor control apparatus | Takefumi Hatanaka | 1993-04-20 |