Means for reducing undesirable effects

Means for reducing undesirable effects · 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 codeH01Q19/021
Official title{Means for reducing undesirable effects}
Display labelMeans for reducing undesirable effects
Total patents128

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
20154
201611
20173
20188
201911
202021
202114
202212
202316
202415
202512
20261

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 H01Q19/021?
CPC H01Q19/021 is the Cooperative Patent Classification code for “Means for reducing undesirable effects.”
How many patents are filed under CPC H01Q19/021 (Means for reducing undesirable effects)?
Our database includes 128 publications tagged with this CPC code.
Is patent activity under CPC H01Q19/021 growing?
Publication counts under this code: 15 in 2024 vs 12 in 2025 (latest complete years).