What is CPC B29C57/02?

CPC B29C57/02 is the Cooperative Patent Classification code for “Belling or enlarging, e.g. combined with forming a groove.”

How many patents are filed under CPC B29C57/02 (Belling or enlarging, e.g. combined with forming a groove)?

Our database includes 30 publications tagged with this CPC code.

Publication counts under this code: 1 in 2024 vs 6 in 2025 (latest complete years).

Belling or enlarging, e.g. combined with forming a groove · 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	B29C57/02
Official title	Belling or enlarging, e.g. combined with forming a groove
Display label	Belling or enlarging, e.g. combined with forming a groove
Total patents	30

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 B29C57/02?: CPC B29C57/02 is the Cooperative Patent Classification code for “Belling or enlarging, e.g. combined with forming a groove.”
How many patents are filed under CPC B29C57/02 (Belling or enlarging, e.g. combined with forming a groove)?: Our database includes 30 publications tagged with this CPC code.
Is patent activity under CPC B29C57/02 growing?: Publication counts under this code: 1 in 2024 vs 6 in 2025 (latest complete years).