Device for preparing a high-voltage direct current transmission, converter station and energy providing system
US-2020395741-A1 · Dec 17, 2020 · US
having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies
having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F30/04 |
| Official title | having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies |
| Display label | having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies |
| Total patents | 107 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 9 |
| 2017 | 9 |
| 2018 | 8 |
| 2019 | 18 |
| 2020 | 19 |
| 2021 | 10 |
| 2022 | 8 |
| 2023 | 8 |
| 2024 | 3 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Power supply device, charging system and charge scheduling method
US-2020336081-A1 · Oct 22, 2020 · US
Transformer and method of generating multiple multiphase output signals
US-2020335271-A1 · Oct 22, 2020 · US
Power receiving system and power supply system
US-2020303953-A1 · Sep 24, 2020 · US
Transformer apparatus for a charging station for electrically charging vehicles and having at least two charging points
US-10696183-B2 · Jun 30, 2020 · US
Circuit arrangement
US-10652989-B2 · May 12, 2020 · US
Transformer and llc resonant converter having the same
US-2020136518-A1 · Apr 30, 2020 · US
High voltage switch with isolated power
US-10607814-B2 · Mar 31, 2020 · US
Transformer
US-2020005984-A1 · Jan 2, 2020 · US
Integrated magnetic component
US-10498245-B2 · Dec 3, 2019 · US
Welding type power supply with transformer
US-10486257-B2 · Nov 26, 2019 · US
Electromagnetic device
US-10483033-B2 · Nov 19, 2019 · US
System of Termination of High Power Transformers for Reduced AC Termination Loss at High Frequency
US-2019341186-A1 · Nov 7, 2019 · US
Circuit arrangement
US-2019327822-A1 · Oct 24, 2019 · US
Winding module, hybrid transformer, module and circuit for DC-DC power conversion
US-10403428-B2 · Sep 3, 2019 · US
Multi-pulse electromagnetic device including a linear magnetic core configuration
US-10403429-B2 · Sep 3, 2019 · US
Subsea power distribution device and system
US-10374398-B2 · Aug 6, 2019 · US
Current transformer
US-10340079-B2 · Jul 2, 2019 · US
Transformer device for a charging station for electrically charging vehicles with at least two charging points
US-2019190297-A1 · Jun 20, 2019 · US
Transformer apparatus for a charging station for electrically charging vehicles and having at least two charging points
US-2019184839-A1 · Jun 20, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F30/04?
- CPC H01F30/04 is the Cooperative Patent Classification code for “having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies.”
- How many patents are filed under CPC H01F30/04 (having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies)?
- Our database includes 107 publications tagged with this CPC code.
- Is patent activity under CPC H01F30/04 growing?
- Publication counts under this code: 3 in 2024 vs 6 in 2025 (latest complete years).