Layered materials (characterised by special function or use A41D31/04)

Layered materials (characterised by special function or use A41D31/04) · 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 codeA41D31/02
Official titleLayered materials (characterised by special function or use A41D31/04)
Display labelLayered materials (characterised by special function or use A41D31/04)
Total patents350

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
201517
201620
201731
201840
201948
202053
202129
202236
202336
202418
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 A41D31/02?
CPC A41D31/02 is the Cooperative Patent Classification code for “Layered materials (characterised by special function or use A41D31/04).”
How many patents are filed under CPC A41D31/02 (Layered materials (characterised by special function or use A41D31/04))?
Our database includes 350 publications tagged with this CPC code.
Is patent activity under CPC A41D31/02 growing?
Publication counts under this code: 18 in 2024 vs 19 in 2025 (latest complete years).