Controller and drive circuit for electric motors
US-12231069-B2 · Feb 18, 2025 · US
by phase-splitting with a capacitor
by phase-splitting with a capacitor · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P1/44 |
| Official title | by phase-splitting with a capacitor |
| Display label | by phase-splitting with a capacitor |
| Total patents | 61 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 7 |
| 2018 | 5 |
| 2019 | 6 |
| 2020 | 6 |
| 2021 | 6 |
| 2022 | 8 |
| 2023 | 9 |
| 2024 | 4 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Controller and drive circuits for electric motors
US-12212253-B2 · Jan 28, 2025 · US
Controller and drive circuits for electric motors
US-12191788-B2 · Jan 7, 2025 · US
Controller and drive circuits for electric motors
US-2024204698-A1 · Jun 20, 2024 · US
Motor controller, motor and pump device
US-12015312-B2 · Jun 18, 2024 · US
Hybrid drive circuit for variable speed induction motor system and methods of control
US-11881801-B2 · Jan 23, 2024 · US
Systems and methods for component monitoring in an electric motor
US-2024014763-A1 · Jan 11, 2024 · US
Hybrid drive circuit for variable speed induction motor system and methods of control
US-2023344379-A1 · Oct 26, 2023 · US
Systems and methods for component monitoring in an electric motor
US-11791760-B2 · Oct 17, 2023 · US
Laundry appliance utilizing a permanent split capacitor motor having a sensor for providing temperature control within the appliance
US-11773530-B2 · Oct 3, 2023 · US
Controller and drive circuits for electric motors
US-2023283216-A1 · Sep 7, 2023 · US
Hybrid drive circuit for variable speed induction motor system and methods of control
US-11716040-B2 · Aug 1, 2023 · US
Controller and drive circuits for electric motors
US-11689137-B2 · Jun 27, 2023 · US
Long-distance speed control system for brushless DC motor of fan
US-11686317-B2 · Jun 27, 2023 · US
Controller and drive circuit for electric motors
US-2023123360-A1 · Apr 20, 2023 · US
Long-distance speed control system for brushless dc motor of fan
US-2023011313-A1 · Jan 12, 2023 · US
Controller and drive circuit for electric motors
US-11539319-B2 · Dec 27, 2022 · US
Controller and drive circuits for electric motors
US-2022345063-A1 · Oct 27, 2022 · US
Motor controller, motor and pump device
US-2022302800-A1 · Sep 22, 2022 · US
Systems and methods for component monitoring in an electric motor
US-2022255489-A1 · Aug 11, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P1/44?
- CPC H02P1/44 is the Cooperative Patent Classification code for “by phase-splitting with a capacitor.”
- How many patents are filed under CPC H02P1/44 (by phase-splitting with a capacitor)?
- Our database includes 61 publications tagged with this CPC code.
- Is patent activity under CPC H02P1/44 growing?
- Publication counts under this code: 4 in 2024 vs 4 in 2025 (latest complete years).