Joining superposed plates by locally deforming without slitting or piercing

Joining superposed plates by locally deforming without slitting or piercing · 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 codeB21D39/031
Official title{Joining superposed plates by locally deforming without slitting or piercing}
Display labelJoining superposed plates by locally deforming without slitting or piercing
Total patents113

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
20157
201611
20175
201811
201912
20205
202111
202216
202311
202410
202512
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 B21D39/031?
CPC B21D39/031 is the Cooperative Patent Classification code for “Joining superposed plates by locally deforming without slitting or piercing.”
How many patents are filed under CPC B21D39/031 (Joining superposed plates by locally deforming without slitting or piercing)?
Our database includes 113 publications tagged with this CPC code.
Is patent activity under CPC B21D39/031 growing?
Publication counts under this code: 10 in 2024 vs 12 in 2025 (latest complete years).