Flow-control devices, e.g. using valves ({B67C3/2617, B67C3/2625, B67C3/2637 take precedence}; valves in general F16K)

Flow-control devices, e.g. using valves ({B67C3/2617, B67C3/2625, B67C3/2637 take precedence}; valves in general F16K) · 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 codeB67C3/28
Official titleFlow-control devices, e.g. using valves ({B67C3/2617, B67C3/2625, B67C3/2637 take precedence}; valves in general F16K)
Display labelFlow-control devices, e.g. using valves ({B67C3/2617, B67C3/2625, B67C3/2637 take precedence}; valves in general F16K)
Total patents146

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
20154
20168
20179
201813
201918
202019
202120
202217
202315
202414
20257
20262

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 B67C3/28?
CPC B67C3/28 is the Cooperative Patent Classification code for “Flow-control devices, e.g. using valves ({B67C3/2617, B67C3/2625, B67C3/2637 take precedence}; valves in general F16K).”
How many patents are filed under CPC B67C3/28 (Flow-control devices, e.g. using valves ({B67C3/2617, B67C3/2625, B67C3/2637 take precedence}; valves in general F16K))?
Our database includes 146 publications tagged with this CPC code.
Is patent activity under CPC B67C3/28 growing?
Publication counts under this code: 14 in 2024 vs 7 in 2025 (latest complete years).