with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core

with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeH01F17/045
Official title{with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core}
Display labelwith core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
Total patents1,132

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
201532
201649
201769
2018101
2019113
2020136
2021129
2022123
2023150
2024115
202596
202619

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC H01F17/045?
CPC H01F17/045 is the Cooperative Patent Classification code for “with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core.”
How many patents are filed under CPC H01F17/045 (with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core)?
Our database includes 1,132 publications tagged with this CPC code.
Is patent activity under CPC H01F17/045 growing?
Publication counts under this code: 115 in 2024 vs 96 in 2025 (latest complete years).