Current converter with interchangeable head
US-2018261372-A1 · Sep 13, 2018 · US
Leading of conductors or axles through casings, e.g. for tap-changing arrangements
Leading of conductors or axles through casings, e.g. for tap-changing arrangements · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F27/04 |
| Official title | Leading of conductors or axles through casings, e.g. for tap-changing arrangements |
| Display label | Leading of conductors or axles through casings, e.g. for tap-changing arrangements |
| Total patents | 244 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 16 |
| 2017 | 20 |
| 2018 | 24 |
| 2019 | 30 |
| 2020 | 22 |
| 2021 | 24 |
| 2022 | 28 |
| 2023 | 26 |
| 2024 | 25 |
| 2025 | 10 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oil type phase shift transformer for medium voltage inverter system
US-10069437-B2 · Sep 4, 2018 · US
Plug socket with current transformer
US-10027068-B2 · Jul 17, 2018 · US
Multi-phase transformer
US-2018174744-A1 · Jun 21, 2018 · US
Current converter with interchangeable head
US-9978495-B2 · May 22, 2018 · US
Plug socket with current transformer
US-2018115121-A1 · Apr 26, 2018 · US
Ethernet magnetics package wire terminations
US-2018096774-A1 · Apr 5, 2018 · US
Top head housing
US-2018075962-A1 · Mar 15, 2018 · US
Reactor including first end plate and second end plate
US-2018068783-A1 · Mar 8, 2018 · US
Current transformer support device and switchgear using current transformer support device
US-9847163-B2 · Dec 19, 2017 · US
High-voltage insulator
US-9837184-B2 · Dec 5, 2017 · US
Gas-insulated measurement transformer having a separating device
US-9831032-B2 · Nov 28, 2017 · US
Transformer security enclosure
US-9812241-B2 · Nov 7, 2017 · US
Transformer with insertable high voltage conductor
US-2017316862-A1 · Nov 2, 2017 · US
Replacement Transformer With Modular Construction
US-2017316864-A1 · Nov 2, 2017 · US
Arrangement of single phase transformers
US-2017316876-A1 · Nov 2, 2017 · US
Ignition coil and method of assembly
US-9796165-B2 · Oct 24, 2017 · US
Oil Type Phase Shift Transformer for Medium Voltage Inverter System
US-2017288572-A1 · Oct 5, 2017 · US
High-voltage combined electrical apparatus
US-2017256923-A1 · Sep 7, 2017 · US
Power transmission device, method for manufacturing the same, power reception device and method for manufacturing the same
US-2017237295-A1 · Aug 17, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F27/04?
- CPC H01F27/04 is the Cooperative Patent Classification code for “Leading of conductors or axles through casings, e.g. for tap-changing arrangements.”
- How many patents are filed under CPC H01F27/04 (Leading of conductors or axles through casings, e.g. for tap-changing arrangements)?
- Our database includes 244 publications tagged with this CPC code.
- Is patent activity under CPC H01F27/04 growing?
- Publication counts under this code: 25 in 2024 vs 10 in 2025 (latest complete years).