What is CPC B60D1/04?

CPC B60D1/04 is the Cooperative Patent Classification code for “Hook or hook-and-hasp couplings.”

How many patents are filed under CPC B60D1/04 (Hook or hook-and-hasp couplings)?

Our database includes 133 publications tagged with this CPC code.

Publication counts under this code: 20 in 2024 vs 19 in 2025 (latest complete years).

Hook or hook-and-hasp couplings · 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	B60D1/04
Official title	Hook or hook-and-hasp couplings
Display label	Hook or hook-and-hasp couplings
Total patents	133

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

Filing activity over the last five years is growing.

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 B60D1/04?: CPC B60D1/04 is the Cooperative Patent Classification code for “Hook or hook-and-hasp couplings.”
How many patents are filed under CPC B60D1/04 (Hook or hook-and-hasp couplings)?: Our database includes 133 publications tagged with this CPC code.
Is patent activity under CPC B60D1/04 growing?: Publication counts under this code: 20 in 2024 vs 19 in 2025 (latest complete years).