Corrugations

Corrugations · 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 codeB65D1/44
Official titleCorrugations
Display labelCorrugations
Total patents166

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
201518
201610
201719
201815
201925
202012
202112
202210
202316
202418
20259
20262

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 B65D1/44?
CPC B65D1/44 is the Cooperative Patent Classification code for “Corrugations.”
How many patents are filed under CPC B65D1/44 (Corrugations)?
Our database includes 166 publications tagged with this CPC code.
Is patent activity under CPC B65D1/44 growing?
Publication counts under this code: 18 in 2024 vs 9 in 2025 (latest complete years).