Ring extruders

Ring extruders · 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 codeB29C48/43
Official titleRing extruders
Display labelRing extruders
Total patents72

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
20153
20163
20172
20182
20198
202021
20217
202213
20235
20245
20253

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 B29C48/43?
CPC B29C48/43 is the Cooperative Patent Classification code for “Ring extruders.”
How many patents are filed under CPC B29C48/43 (Ring extruders)?
Our database includes 72 publications tagged with this CPC code.
Is patent activity under CPC B29C48/43 growing?
Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).