What is CPC B65D81/386?

CPC B65D81/386 is the Cooperative Patent Classification code for “formed of corrugated material.”

How many patents are filed under CPC B65D81/386 (formed of corrugated material)?

Our database includes 64 publications tagged with this CPC code.

Publication counts under this code: 5 in 2024 vs 12 in 2025 (latest complete years).

formed of corrugated material · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	B65D81/386
Official title	{formed of corrugated material}
Display label	formed of corrugated material
Total patents	64

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

Filing activity over the last five years is stable.

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 B65D81/386?: CPC B65D81/386 is the Cooperative Patent Classification code for “formed of corrugated material.”
How many patents are filed under CPC B65D81/386 (formed of corrugated material)?: Our database includes 64 publications tagged with this CPC code.
Is patent activity under CPC B65D81/386 growing?: Publication counts under this code: 5 in 2024 vs 12 in 2025 (latest complete years).