PatentsDB

by using protective electric currents, voltages, cathodes, anodes, electric short-circuits

by using protective electric currents, voltages, cathodes, anodes, electric short-circuits · Cooperative Patent Classification (CPC)

Engines, pumps, lighting, heating, and mechanical systems.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeF28F19/004
Official title{by using protective electric currents, voltages, cathodes, anodes, electric short-circuits}
Display labelby using protective electric currents, voltages, cathodes, anodes, electric short-circuits
Total patents54

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
20153
20161
20173
20182
20197
20206
20216
20223
20233
202410
20257
20263

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 F28F19/004?
CPC F28F19/004 is the Cooperative Patent Classification code for “by using protective electric currents, voltages, cathodes, anodes, electric short-circuits.”
How many patents are filed under CPC F28F19/004 (by using protective electric currents, voltages, cathodes, anodes, electric short-circuits)?
Our database includes 54 publications tagged with this CPC code.
Is patent activity under CPC F28F19/004 growing?
Publication counts under this code: 10 in 2024 vs 7 in 2025 (latest complete years).