Electromagnetic actuator, active vibration-control device and active vibration-damping device
US-10151370-B2 · Dec 11, 2018 · US
with armatures moving in alternate directions by alternate energisation of two coil systems
with armatures moving in alternate directions by alternate energisation of two coil systems · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02K33/12 |
| Official title | with armatures moving in alternate directions by alternate energisation of two coil systems |
| Display label | with armatures moving in alternate directions by alternate energisation of two coil systems |
| Total patents | 291 |
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 | 5 |
| 2016 | 19 |
| 2017 | 23 |
| 2018 | 32 |
| 2019 | 31 |
| 2020 | 43 |
| 2021 | 36 |
| 2022 | 22 |
| 2023 | 29 |
| 2024 | 29 |
| 2025 | 13 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Three degree-of-freedom electromagnetic machine control system and method
US-10110108-B2 · Oct 23, 2018 · US
Linear Vibration Motor
US-2018297067-A1 · Oct 18, 2018 · US
Vibration motor
US-2018297069-A1 · Oct 18, 2018 · US
Linear vibration motor
US-2018278136-A1 · Sep 27, 2018 · US
Linear vibration motor
US-10076771-B2 · Sep 18, 2018 · US
Vibrating motor
US-2018248458-A1 · Aug 30, 2018 · US
Reciprocating electromagnetic actuator with flux-balanced armature and stationary cores
US-2018226868-A1 · Aug 9, 2018 · US
Coil-oscillator vibration unit for rail workhead
US-10008914-B2 · Jun 26, 2018 · US
Electric appliance for personal care
US-9993930-B2 · Jun 12, 2018 · US
Optical unit with shake correction function
US-2018129066-A1 · May 10, 2018 · US
Multi-degree of freedom spherical actuator
US-9893574-B2 · Feb 13, 2018 · US
Linear vibrator
US-9859779-B2 · Jan 2, 2018 · US
Gimbal adjustment system
US-2017363881-A1 · Dec 21, 2017 · US
Camera system
US-2017329111-A1 · Nov 16, 2017 · US
Electromagnetic actuator, active vibration-control device and active vibration-damping device
US-2017328441-A1 · Nov 16, 2017 · US
Electromagnetic actuators and component designs therefor
US-9787169-B2 · Oct 10, 2017 · US
Linear vibrator
US-9774236-B2 · Sep 26, 2017 · US
Compressible motor, implantation arrangement, and method for positioning the motor
US-9750860-B2 · Sep 5, 2017 · US
Electromagnetic driving module and lens driving device using the same
US-2017227784-A1 · Aug 10, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02K33/12?
- CPC H02K33/12 is the Cooperative Patent Classification code for “with armatures moving in alternate directions by alternate energisation of two coil systems.”
- How many patents are filed under CPC H02K33/12 (with armatures moving in alternate directions by alternate energisation of two coil systems)?
- Our database includes 291 publications tagged with this CPC code.
- Is patent activity under CPC H02K33/12 growing?
- Publication counts under this code: 29 in 2024 vs 13 in 2025 (latest complete years).