Drums, rollers, or wheels {(B65G23/18 takes precedence)}

Drums, rollers, or wheels {(B65G23/18 takes precedence)} · 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 codeB65G23/04
Official titleDrums, rollers, or wheels {(B65G23/18 takes precedence)}
Display labelDrums, rollers, or wheels {(B65G23/18 takes precedence)}
Total patents134

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
201512
20166
20177
20185
201911
202019
202123
202211
202314
202411
20259
20266

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 B65G23/04?
CPC B65G23/04 is the Cooperative Patent Classification code for “Drums, rollers, or wheels {(B65G23/18 takes precedence)}.”
How many patents are filed under CPC B65G23/04 (Drums, rollers, or wheels {(B65G23/18 takes precedence)})?
Our database includes 134 publications tagged with this CPC code.
Is patent activity under CPC B65G23/04 growing?
Publication counts under this code: 11 in 2024 vs 9 in 2025 (latest complete years).