Iwasa; Masao
Patent Applications and Registrations
Patent applications and USPTO patent grants for Iwasa; Masao.The latest application filed is for "traction-type elevator".
- Iwasa; Masao - Ichikawa JP
- Iwasa; Masao - Chiba JP
| Patent | Date |
|---|---|
| Traction-type elevator Grant 5,533,595 - Narumi , et al. July 9, 1 | 1996-07-09 |
| Offset correction circuit of PWM inverter Grant 5,105,352 - Iwasa , et al. April 14, 1 | 1992-04-14 |
| Alternating current motor control system with emergency control responsive to failure of power supply Grant 5,070,290 - Iwasa , et al. December 3, 1 | 1991-12-03 |
| Clipper circuit for power transistor circuit and inverter circuit utilizing the same Grant 5,070,426 - Iwasa , et al. December 3, 1 | 1991-12-03 |
| Elevator power source device Grant 5,058,710 - Iwasa October 22, 1 | 1991-10-22 |
| PWM inverter control unit Grant 4,994,951 - Iwasa , et al. February 19, 1 | 1991-02-19 |
| Motor control apparatus Grant 4,870,334 - Iwasa , et al. September 26, 1 | 1989-09-26 |
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