What is CPC G01N27/4072?

CPC G01N27/4072 is the Cooperative Patent Classification code for “characterized by the diffusion barrier.”

How many patents are filed under CPC G01N27/4072 (characterized by the diffusion barrier)?

Our database includes 219 publications tagged with this CPC code.

Publication counts under this code: 12 in 2024 vs 13 in 2025 (latest complete years).

characterized by the diffusion barrier · Cooperative Patent Classification (CPC)

Computing, optics, measurement, and control technologies.

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	G01N27/4072
Official title	{characterized by the diffusion barrier}
Display label	characterized by the diffusion barrier
Total patents	219

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

Filing activity over the last five years is declining.

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

Answers are generated from the same data shown on this page.

What is CPC G01N27/4072?: CPC G01N27/4072 is the Cooperative Patent Classification code for “characterized by the diffusion barrier.”
How many patents are filed under CPC G01N27/4072 (characterized by the diffusion barrier)?: Our database includes 219 publications tagged with this CPC code.
Is patent activity under CPC G01N27/4072 growing?: Publication counts under this code: 12 in 2024 vs 13 in 2025 (latest complete years).