What is CPC B65G21/08?

CPC B65G21/08 is the Cooperative Patent Classification code for “Protective roofs or arch supports therefor.”

How many patents are filed under CPC B65G21/08 (Protective roofs or arch supports therefor)?

Our database includes 39 publications tagged with this CPC code.

Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).

Protective roofs or arch supports therefor · 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	B65G21/08
Official title	Protective roofs or arch supports therefor
Display label	Protective roofs or arch supports therefor
Total patents	39

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

Filing activity over the last five years is declining.

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 B65G21/08?: CPC B65G21/08 is the Cooperative Patent Classification code for “Protective roofs or arch supports therefor.”
How many patents are filed under CPC B65G21/08 (Protective roofs or arch supports therefor)?: Our database includes 39 publications tagged with this CPC code.
Is patent activity under CPC B65G21/08 growing?: Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).