made of ferromagnetic material

made of ferromagnetic material · 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 codeH01F27/366
Official title{made of ferromagnetic material}
Display labelmade of ferromagnetic material
Total patents1,103

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
201543
201652
201780
2018135
2019119
2020111
2021116
2022122
2023111
2024114
202577
202623

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 H01F27/366?
CPC H01F27/366 is the Cooperative Patent Classification code for “made of ferromagnetic material.”
How many patents are filed under CPC H01F27/366 (made of ferromagnetic material)?
Our database includes 1,103 publications tagged with this CPC code.
Is patent activity under CPC H01F27/366 growing?
Publication counts under this code: 114 in 2024 vs 77 in 2025 (latest complete years).