Permeability to gases

Permeability to gases · 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 codeB29K2995/0065
Official titlePermeability to gases
Display labelPermeability to gases
Total patents172

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
20156
201621
201722
201822
201919
202022
202113
202215
20236
202417
20258
20261

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 B29K2995/0065?
CPC B29K2995/0065 is the Cooperative Patent Classification code for “Permeability to gases.”
How many patents are filed under CPC B29K2995/0065 (Permeability to gases)?
Our database includes 172 publications tagged with this CPC code.
Is patent activity under CPC B29K2995/0065 growing?
Publication counts under this code: 17 in 2024 vs 8 in 2025 (latest complete years).