Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Single inverter controller for elevator hoist and door motors

Single inverter controller for elevator hoist and door motors

US Patent 6481533 · Granted Nov 19, 2002

Estimated economic value: $17,857,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Traction type elevator1996
Traction-type elevator1996
Brake control system in elevator control apparatus1993
Offset correction circuit of PWM inverter1992
Alternating current motor control system with emergency control responsive to fa1991
Clipper circuit for power transistor circuit and inverter circuit utilizing the 1991
Elevator power source device1991
PWM inverter control unit1991
Motor control apparatus1989