PatentsDB

Special devices controlling the circulation of the liquid, e.g. valve arrangement ({E05F3/223 takes precedence}; valves per se F16K)

Special devices controlling the circulation of the liquid, e.g. valve arrangement ({E05F3/223 takes precedence}; valves per se F16K) · Cooperative Patent Classification (CPC)

Building, mining, and civil engineering structures.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeE05F3/12
Official titleSpecial devices controlling the circulation of the liquid, e.g. valve arrangement ({E05F3/223 takes precedence}; valves per se F16K)
Display labelSpecial devices controlling the circulation of the liquid, e.g. valve arrangement ({E05F3/223 takes precedence}; valves per se F16K)
Total patents81

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
20162
20173
20183
20195
20207
20218
20227
202317
202411
202515
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 E05F3/12?
CPC E05F3/12 is the Cooperative Patent Classification code for “Special devices controlling the circulation of the liquid, e.g. valve arrangement ({E05F3/223 takes precedence}; valves per se F16K).”
How many patents are filed under CPC E05F3/12 (Special devices controlling the circulation of the liquid, e.g. valve arrangement ({E05F3/223 takes precedence}; valves per se F16K))?
Our database includes 81 publications tagged with this CPC code.
Is patent activity under CPC E05F3/12 growing?
Publication counts under this code: 11 in 2024 vs 15 in 2025 (latest complete years).