Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5247140 | Brake control system in elevator control apparatus | Masao Iwasa, Koji Yamada | 1993-09-21 |
| 5105352 | Offset correction circuit of PWM inverter | Masao Iwasa | 1992-04-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5247140 | Brake control system in elevator control apparatus | Masao Iwasa, Koji Yamada | 1993-09-21 |
| 5105352 | Offset correction circuit of PWM inverter | Masao Iwasa | 1992-04-14 |