Direct-current electric motor and use thereof as a drive of a liftgate
US-12451783-B2 · Oct 21, 2025 · US
characterised by the arrangement of the magnet circuits
characterised by the arrangement of the magnet circuits · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02K23/40 |
| Official title | characterised by the arrangement of the magnet circuits |
| Display label | characterised by the arrangement of the magnet circuits |
| Total patents | 45 |
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 | 3 |
| 2016 | 7 |
| 2017 | 7 |
| 2018 | 7 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 3 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Power tool including universal motor having interpoles
US-11894754-B2 · Feb 6, 2024 · US
Direct-current electric motor and use thereof as a drive of a liftgate
US-2024014723-A1 · Jan 11, 2024 · US
Power tool including universal motor having interpoles
US-2022320958-A1 · Oct 6, 2022 · US
Motor
US-2022278598-A1 · Sep 1, 2022 · US
Brushed electric motor/generator
US-11387692-B2 · Jul 12, 2022 · US
Rotary electric machine
US-11201529-B2 · Dec 14, 2021 · US
Motor
US-2021376672-A1 · Dec 2, 2021 · US
Motor and actuator
US-11088591-B2 · Aug 10, 2021 · US
Electric motor
US-10756584-B2 · Aug 25, 2020 · US
Rotor and motor including same
US-2020220425-A1 · Jul 9, 2020 · US
Motor driving assembly
US-10693351-B2 · Jun 23, 2020 · US
Electric motor and magnetic core thereof
US-10637307-B2 · Apr 28, 2020 · US
Rotary electric machine
US-2020119630-A1 · Apr 16, 2020 · US
Brush motor
US-2019372445-A1 · Dec 5, 2019 · US
PMDC motor having a structure for producing low noise
US-10461618-B2 · Oct 29, 2019 · US
Rotor and motor, power tool comprising the rotor
US-10424998-B2 · Sep 24, 2019 · US
Electric motor
US-10404112-B2 · Sep 3, 2019 · US
Commutator motor, method for producing a commutator motor, and windscreen-wiper motor
US-10374501-B2 · Aug 6, 2019 · US
Structure for fixing permanent magnet and motor and method of fixing permanent magnet
US-10367383-B2 · Jul 30, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02K23/40?
- CPC H02K23/40 is the Cooperative Patent Classification code for “characterised by the arrangement of the magnet circuits.”
- How many patents are filed under CPC H02K23/40 (characterised by the arrangement of the magnet circuits)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC H02K23/40 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).