Motor control apparatus
US-2021305924-A1 · Sep 30, 2021 · US
with AC powered elevator drive
with AC powered elevator drive · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B66B1/308 |
| Official title | {with AC powered elevator drive} |
| Display label | with AC powered elevator drive |
| Total patents | 100 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 6 |
| 2017 | 7 |
| 2018 | 12 |
| 2019 | 4 |
| 2020 | 12 |
| 2021 | 16 |
| 2022 | 17 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Semiconductor device, method for manufacturing semiconductor device, inverter circuit, drive device, vehicle, and elevator
US-2021296128-A1 · Sep 23, 2021 · US
Current cut-off arrangement of an elevator
US-11097922-B2 · Aug 24, 2021 · US
Elevator system including a permanent magnet (PM) synchronous motor drive system
US-11078049-B2 · Aug 3, 2021 · US
Electric linear motor, elevator and method for controlling rotation of a mover with respect to a stator beam of an electric linear motor
US-11025186-B2 · Jun 1, 2021 · US
Rescue control and method of operating an elevator system including a permanent magnet (PM) synchronous motor drive system
US-11014778-B2 · May 25, 2021 · US
Method for performing a manual drive in an elevator after mains power-off
US-11008197-B2 · May 18, 2021 · US
Electric linear motor, elevator and method for controlling rotation of a mover with respect to a stator beam of an electric linear motor
US-11012019-B2 · May 18, 2021 · US
Semiconductor device, inverter circuit, driving device, vehicle, and elevator
US-2021043723-A1 · Feb 11, 2021 · US
Regenerative drive
US-2020346889-A1 · Nov 5, 2020 · US
Method for determining rotor position of electric motor, elevator and electrical converter unit
US-2020287485-A1 · Sep 10, 2020 · US
Multilevel drive half DC bus power supplies
US-10734925-B2 · Aug 4, 2020 · US
Electric linear motor and elevator
US-2020189884-A1 · Jun 18, 2020 · US
Electric linear motor, elevator and method for controlling rotation of a mover with respect to a stator beam of an electric linear motor
US-2020195183-A1 · Jun 18, 2020 · US
Electric linear motor, elevator and method for controlling rotation of a mover with respect to a stator beam of an electric linear motor
US-2020195182-A1 · Jun 18, 2020 · US
Conveyance system having paralleled drives
US-10654682-B2 · May 19, 2020 · US
Motor control system and motor control method
US-10658960-B2 · May 19, 2020 · US
Decentralized power management in an elevator system
US-2020122962-A1 · Apr 23, 2020 · US
Power supply to ac loads during power source failure in elevator system
US-2020122961-A1 · Apr 23, 2020 · US
Arrangement and method for changing a direction of movement of an elevator car of an elevator, and the elevator thereof
US-2020087113-A1 · Mar 19, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B66B1/308?
- CPC B66B1/308 is the Cooperative Patent Classification code for “with AC powered elevator drive.”
- How many patents are filed under CPC B66B1/308 (with AC powered elevator drive)?
- Our database includes 100 publications tagged with this CPC code.
- Is patent activity under CPC B66B1/308 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).