Motor drive method and motor drive apparatus
US-2022416703-A1 · Dec 29, 2022 · US
specially adapted for very low speeds
specially adapted for very low speeds · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P23/03 |
| Official title | specially adapted for very low speeds |
| Display label | specially adapted for very low speeds |
| Total patents | 79 |
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 | 2 |
| 2016 | 7 |
| 2017 | 6 |
| 2018 | 3 |
| 2019 | 6 |
| 2020 | 16 |
| 2021 | 8 |
| 2022 | 19 |
| 2023 | 7 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Position estimation device and position estimation method
US-11509248-B2 · Nov 22, 2022 · US
Motor drive method and motor drive apparatus
US-2022368256-A1 · Nov 17, 2022 · US
Low-speed sensorless brushless motor control in a power tool
US-2022329180-A1 · Oct 13, 2022 · US
Field-oriented sensorless brushless motor control in a power tool
US-11469697-B2 · Oct 11, 2022 · US
Electric compressor, motor control method, and non-transitory computer-readable medium
US-11418136-B2 · Aug 16, 2022 · US
Field-oriented sensorless brushless motor control in a power tool
US-2022255479-A1 · Aug 11, 2022 · US
Methods and systems for improving current capability for electric motors
US-11381189-B2 · Jul 5, 2022 · US
Driving circuit for semiconductor element, method for driving semiconductor element, and motor control apparatus
US-11342832-B2 · May 24, 2022 · US
Dual-controller system for a sensorless brushless motor control
US-11303235-B2 · Apr 12, 2022 · US
Position estimation device and position estimation method
US-2022014129-A1 · Jan 13, 2022 · US
Motor drive system and method capable of suppressing heat generation during low speed operation
US-11223317-B2 · Jan 11, 2022 · US
Motor control device
US-11211891-B2 · Dec 28, 2021 · US
Low-speed sensorless brushless motor control in a power tool
US-11171586-B2 · Nov 9, 2021 · US
Position sensorless control method in low-speed region of fault-tolerant permanent magnet motor system based on envelope detection and non-orthogonal phase-locked loop
US-2021281154-A1 · Sep 9, 2021 · US
Drive apparatus for oil-pump motor and drive control method for oil-pump motor
US-11088640-B2 · Aug 10, 2021 · US
Mode Control Method and System, and Electronic Apparatus and Storage Medium
US-2021227720-A1 · Jul 22, 2021 · US
Motor control device
US-2021184616-A1 · Jun 17, 2021 · US
Variable Speed Drive for the Sensorless PWM Control of an AC Motor by Exploiting PWM-Induced Artefacts
US-2021091703-A1 · Mar 25, 2021 · US
Device and method for controlling the operation of an electric machine
US-2021075304-A1 · Mar 11, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P23/03?
- CPC H02P23/03 is the Cooperative Patent Classification code for “specially adapted for very low speeds.”
- How many patents are filed under CPC H02P23/03 (specially adapted for very low speeds)?
- Our database includes 79 publications tagged with this CPC code.
- Is patent activity under CPC H02P23/03 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).