for draining or collecting liquids without absorbing them

for draining or collecting liquids without absorbing them · 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 codeB65D81/261
Official title{for draining or collecting liquids without absorbing them}
Display labelfor draining or collecting liquids without absorbing them
Total patents56

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
20151
20161
20173
20183
201910
202011
20215
20226
20231
20244
20258
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 B65D81/261?
CPC B65D81/261 is the Cooperative Patent Classification code for “for draining or collecting liquids without absorbing them.”
How many patents are filed under CPC B65D81/261 (for draining or collecting liquids without absorbing them)?
Our database includes 56 publications tagged with this CPC code.
Is patent activity under CPC B65D81/261 growing?
Publication counts under this code: 4 in 2024 vs 8 in 2025 (latest complete years).