Method for operating a brushless direct current motor
US-2017359007-A1 · Dec 14, 2017 · US
using different methods depending on the speed
using different methods depending on the speed · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P6/181 |
| Official title | {using different methods depending on the speed} |
| Display label | using different methods depending on the speed |
| Total patents | 161 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 20 |
| 2017 | 20 |
| 2018 | 18 |
| 2019 | 14 |
| 2020 | 17 |
| 2021 | 9 |
| 2022 | 9 |
| 2023 | 4 |
| 2024 | 11 |
| 2025 | 14 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Circuits and methods of determining position and velocity of a rotor
US-9825564-B2 · Nov 21, 2017 · US
Power tool and motor drive circuit thereof
US-9819290-B2 · Nov 14, 2017 · US
Rotor flux angle and torque trajectory control apparatus and methods
US-9762155-B1 · Sep 12, 2017 · US
Motor control device
US-9742333-B2 · Aug 22, 2017 · US
Sensorless driving apparatus and sensorless driving method for brushless motor
US-9729091-B2 · Aug 8, 2017 · US
Method for operating an electric motor
US-2017170760-A1 · Jun 15, 2017 · US
Motor drive device
US-9660561-B2 · May 23, 2017 · US
Electric motor control device
US-2017133963-A1 · May 11, 2017 · US
Semiconductor integrated circuit device
US-9630523-B2 · Apr 25, 2017 · US
Motor control device
US-9621093-B2 · Apr 11, 2017 · US
Control device for AC rotating machine, AC rotating machine drive system equipped with control device for AC rotating machine and electric power steering system
US-9621083-B2 · Apr 11, 2017 · US
Power Tool And Motor Drive Circuit Thereof
US-2017077851-A1 · Mar 16, 2017 · US
Brushless motor and control method thereof
US-9590542-B2 · Mar 7, 2017 · US
Circuit and method to detect failure of speed estimation/speed measurement of a multi-phase ac motor
US-2017052208-A1 · Feb 23, 2017 · US
Method of controlling an electrical machine
US-9559623-B2 · Jan 31, 2017 · US
Control device for alternating current rotary machine
US-9553532-B2 · Jan 24, 2017 · US
Angle/frequency selector in an electric motor controller architecture
US-9548686-B2 · Jan 17, 2017 · US
Control method for starting a synchronous electric motor
US-2017005597-A1 · Jan 5, 2017 · US
Electric motor using multiple reference frames for flux angle
US-9509240-B2 · Nov 29, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P6/181?
- CPC H02P6/181 is the Cooperative Patent Classification code for “using different methods depending on the speed.”
- How many patents are filed under CPC H02P6/181 (using different methods depending on the speed)?
- Our database includes 161 publications tagged with this CPC code.
- Is patent activity under CPC H02P6/181 growing?
- Publication counts under this code: 11 in 2024 vs 14 in 2025 (latest complete years).