Oil type phase shift transformer for medium voltage inverter system
US-10069437-B2 · Sep 4, 2018 · US
Adaptations of transformers or inductances for specific applications or functions
Adaptations of transformers or inductances for specific applications or functions · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F38/00 |
| Official title | Adaptations of transformers or inductances for specific applications or functions |
| Display label | Adaptations of transformers or inductances for specific applications or functions |
| Total patents | 194 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 19 |
| 2016 | 17 |
| 2017 | 20 |
| 2018 | 18 |
| 2019 | 16 |
| 2020 | 17 |
| 2021 | 14 |
| 2022 | 20 |
| 2023 | 16 |
| 2024 | 18 |
| 2025 | 15 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Subsea pressure compensation arrangement
US-10041507-B2 · Aug 7, 2018 · US
Reactor including iron cores and rectifier, lc filter, and motor drive apparatus including the same
US-2018182522-A1 · Jun 28, 2018 · US
RF power amplifier splitter
US-9859852-B2 · Jan 2, 2018 · US
Non-contact power reception device and vehicle including the same
US-9827976-B2 · Nov 28, 2017 · US
Linear row array integrated power combiner for RF power amplifiers
US-9813031-B2 · Nov 7, 2017 · US
Six-phase supplied transformer rectifier unit
US-9793820-B2 · Oct 17, 2017 · US
Oil Type Phase Shift Transformer for Medium Voltage Inverter System
US-2017288572-A1 · Oct 5, 2017 · US
Choke for interleaved switching
US-2017229937-A1 · Aug 10, 2017 · US
Energy transfer element with capacitor compensated cancellation and balance shield windings
US-9722499-B2 · Aug 1, 2017 · US
Multiple parallel-connected resonant converter, inductor-integrated magnetic element and transformer-integrated magnetic element
US-2017214330-A1 · Jul 27, 2017 · US
Piezoelectric transformer
US-2017208675-A1 · Jul 20, 2017 · US
Energy transfer element with capacitor compensated cancellation and balance shield windings
US-2017163164-A1 · Jun 8, 2017 · US
Modifiable dc-dc power converters for providing different output voltages
US-2017155332-A1 · Jun 1, 2017 · US
Inductor and inductor module
US-2017148558-A1 · May 25, 2017 · US
Electromagnetic device
US-2017104547-A1 · Apr 13, 2017 · US
Radio frequency front end module circuit incorporating an efficient high linearity power amplifier
US-9608577-B2 · Mar 28, 2017 · US
Power receiving unit, power transmission unit, and feed system
US-2017077758-A1 · Mar 16, 2017 · US
Radio frequency circuitr having an integrated harmonic filter and a radio frequency circuit having transistors of different threshold voltages
US-2017070199-A1 · Mar 9, 2017 · US
Microfluidics controlled tunable coil
US-9583257-B2 · Feb 28, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F38/00?
- CPC H01F38/00 is the Cooperative Patent Classification code for “Adaptations of transformers or inductances for specific applications or functions.”
- How many patents are filed under CPC H01F38/00 (Adaptations of transformers or inductances for specific applications or functions)?
- Our database includes 194 publications tagged with this CPC code.
- Is patent activity under CPC H01F38/00 growing?
- Publication counts under this code: 18 in 2024 vs 15 in 2025 (latest complete years).