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by making use of air suction through an opening closed by the rising liquid

by making use of air suction through an opening closed by the rising liquid · 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 codeB67D7/48
Official titleby making use of air suction through an opening closed by the rising liquid
Display labelby making use of air suction through an opening closed by the rising liquid
Total patents19

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
20161
20171
20185
20193
20205
20211
20221
20232

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.