Vibration driving device for a strong magnetic-field environment
US-12463560-B2 · Nov 4, 2025 · US
Multi-phase circuits
Multi-phase 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 | H02N2/147 |
| Official title | {Multi-phase circuits} |
| Display label | Multi-phase circuits |
| Total patents | 35 |
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 | 2 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 8 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Drive circuit for an ultrasonic motor
US-2024413768-A1 · Dec 12, 2024 · US
Piezoelectric resonator and drive device
US-11764704-B2 · Sep 19, 2023 · US
Vibration actuator having plural vibrators and inductors
US-11728750-B2 · Aug 15, 2023 · US
Lens barrel and imaging device
US-11594985-B2 · Feb 28, 2023 · US
Vibration actuator and driving device for vibration actuator
US-11588417-B2 · Feb 21, 2023 · US
Zero-voltage zero-current soft switching type driving method for ultrasonic driving unit
US-11539309-B2 · Dec 27, 2022 · US
Piezoelectric resonator and drive device
US-2022376635-A1 · Nov 24, 2022 · US
Driving apparatus that drives pan head apparatus, control method therefor, vibration-wave motor apparatus, and image pickup apparatus
US-11496070-B2 · Nov 8, 2022 · US
Drive control device, electronic equipment, drive control method, and computer readable medium
US-11476779-B2 · Oct 18, 2022 · US
Vibration wave motor, drive control system, and optical apparatus
US-11469689-B2 · Oct 11, 2022 · US
Vibration driving device
US-2022263432-A1 · Aug 18, 2022 · US
Control device and method for controlling a piezoelectric drive device using phase difference
US-11411512-B2 · Aug 9, 2022 · US
Piezoelectric drive device, robot, and printer
US-11233465-B2 · Jan 25, 2022 · US
Lens barrel and imaging device
US-2021273586-A1 · Sep 2, 2021 · US
Vibration wave motor and optical device
US-11043910-B2 · Jun 22, 2021 · US
Vibration actuator and electronic device including the same
US-11012004-B2 · May 18, 2021 · US
Zero-Voltage Zero-Current Soft Switching Type Driving Method for Ultrasonic Driving Unit
US-2021044220-A1 · Feb 11, 2021 · US
Control apparatus for vibration-type actuator, control method for vibration-type actuator, vibration-type driving apparatus, and electronic apparatus that improve acceleration performance and deceleration performance in driving vibration-type actuator
US-10833610-B2 · Nov 10, 2020 · US
Vibration actuator and driving device for vibration actuator
US-2020343831-A1 · Oct 29, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02N2/147?
- CPC H02N2/147 is the Cooperative Patent Classification code for “Multi-phase circuits.”
- How many patents are filed under CPC H02N2/147 (Multi-phase circuits)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC H02N2/147 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).