made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel

made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel · Cooperative Patent Classification (CPC)

Agriculture, food, personal care, health, and life sciences.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeA61F2/441
Official title{made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel}
Display labelmade of inflatable pockets or chambers filled with fluid, e.g. with hydrogel
Total patents372

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
201535
201649
201749
201840
201941
202039
202123
202228
202323
202423
202519
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 A61F2/441?
CPC A61F2/441 is the Cooperative Patent Classification code for “made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel.”
How many patents are filed under CPC A61F2/441 (made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel)?
Our database includes 372 publications tagged with this CPC code.
Is patent activity under CPC A61F2/441 growing?
Publication counts under this code: 23 in 2024 vs 19 in 2025 (latest complete years).