Manufacturing method of molded-forming power inductor
US-2024412920-A1 · Dec 12, 2024 · US
Arrangements for noise damping
Arrangements for noise damping · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F27/33 |
| Official title | Arrangements for noise damping |
| Display label | Arrangements for noise damping |
| Total patents | 231 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 15 |
| 2017 | 16 |
| 2018 | 24 |
| 2019 | 19 |
| 2020 | 24 |
| 2021 | 26 |
| 2022 | 23 |
| 2023 | 26 |
| 2024 | 18 |
| 2025 | 25 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Noise filter and noise reduction unit
US-2018374635-A1 · Dec 27, 2018 · US
Noise reduction unit
US-2018374634-A1 · Dec 27, 2018 · US
Noise reduction unit
US-2018375261-A1 · Dec 27, 2018 · US
Reactor having iron cores and coils
US-2018366252-A1 · Dec 20, 2018 · US
Combined common mode inductor and differential signal transformer
US-2018366261-A1 · Dec 20, 2018 · US
Electronic component
US-10115519-B2 · Oct 30, 2018 · US
Electric noise reduction device with retainer
US-10084295-B2 · Sep 25, 2018 · US
Method and system for controlling cooling system of power equipment
US-2018268981-A1 · Sep 20, 2018 · US
Magnetic shunt assembly for magnetic shielding of a power device
US-2018233276-A1 · Aug 16, 2018 · US
Three-phase reactor including vibration suppressing structure part
US-2018204667-A1 · Jul 19, 2018 · US
Common mode filter
US-2018199420-A1 · Jul 12, 2018 · US
Ferrite laminate and noise suppression sheet
US-2018199474-A1 · Jul 12, 2018 · US
Circuit arrangement for reducing a unidirectional flux component in the soft-magnetic core of a transformer
US-9941046-B2 · Apr 10, 2018 · US
Electronic component for guiding a magnetic field
US-9934900-B2 · Apr 3, 2018 · US
Arrangement for Reducing Radiation of Noise from Liquid-Cooled Transformers or Chokes
US-2018047500-A1 · Feb 15, 2018 · US
Noise filter and harness
US-9859864-B2 · Jan 2, 2018 · US
Transformer having noise reduction structure
US-2017365401-A1 · Dec 21, 2017 · US
Gapless core reactor
US-2017323717-A1 · Nov 9, 2017 · US
Wire harness
US-9783136-B2 · Oct 10, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F27/33?
- CPC H01F27/33 is the Cooperative Patent Classification code for “Arrangements for noise damping.”
- How many patents are filed under CPC H01F27/33 (Arrangements for noise damping)?
- Our database includes 231 publications tagged with this CPC code.
- Is patent activity under CPC H01F27/33 growing?
- Publication counts under this code: 18 in 2024 vs 25 in 2025 (latest complete years).