the discharge being effected through the diaphragm and being blockable by an electrically-actuated member making contact with the diaphragm

the discharge being effected through the diaphragm and being blockable by an electrically-actuated member making contact with the diaphragm · 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 codeF16K31/404
Official title{the discharge being effected through the diaphragm and being blockable by an electrically-actuated member making contact with the diaphragm}
Display labelthe discharge being effected through the diaphragm and being blockable by an electrically-actuated member making contact with the diaphragm
Total patents47

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
20164
20175
20184
20196
202010
20217
20222
20241
20254

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 F16K31/404?
CPC F16K31/404 is the Cooperative Patent Classification code for “the discharge being effected through the diaphragm and being blockable by an electrically-actuated member making contact with the diaphragm.”
How many patents are filed under CPC F16K31/404 (the discharge being effected through the diaphragm and being blockable by an electrically-actuated member making contact with the diaphragm)?
Our database includes 47 publications tagged with this CPC code.
Is patent activity under CPC F16K31/404 growing?
Publication counts under this code: 1 in 2024 vs 4 in 2025 (latest complete years).