Railway control or brake valves

Railway control or brake valves · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeB60T15/021
Official title{Railway control or brake valves}
Display labelRailway control or brake valves
Total patents76

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
20154
201611
20177
20189
201913
20206
20216
20227
20234
20245
20253
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 B60T15/021?
CPC B60T15/021 is the Cooperative Patent Classification code for “Railway control or brake valves.”
How many patents are filed under CPC B60T15/021 (Railway control or brake valves)?
Our database includes 76 publications tagged with this CPC code.
Is patent activity under CPC B60T15/021 growing?
Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).