Blocking layers, e.g. against migration of ions

Blocking layers, e.g. against migration of ions · Cooperative Patent Classification (CPC)

Computing, optics, measurement, and control technologies.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeG02F2201/501
Official titleBlocking layers, e.g. against migration of ions
Display labelBlocking layers, e.g. against migration of ions
Total patents426

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
201519
201630
201737
201856
201964
202051
202151
202239
202328
202432
202519

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 G02F2201/501?
CPC G02F2201/501 is the Cooperative Patent Classification code for “Blocking layers, e.g. against migration of ions.”
How many patents are filed under CPC G02F2201/501 (Blocking layers, e.g. against migration of ions)?
Our database includes 426 publications tagged with this CPC code.
Is patent activity under CPC G02F2201/501 growing?
Publication counts under this code: 32 in 2024 vs 19 in 2025 (latest complete years).