What is CPC E03C1/23?

CPC E03C1/23 is the Cooperative Patent Classification code for “with mechanical closure mechanisms.”

How many patents are filed under CPC E03C1/23 (with mechanical closure mechanisms)?

Our database includes 43 publications tagged with this CPC code.

Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).

with mechanical closure mechanisms · Cooperative Patent Classification (CPC)

Building, mining, and civil engineering structures.

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	E03C1/23
Official title	with mechanical closure mechanisms
Display label	with mechanical closure mechanisms
Total patents	43

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 E03C1/23?: CPC E03C1/23 is the Cooperative Patent Classification code for “with mechanical closure mechanisms.”
How many patents are filed under CPC E03C1/23 (with mechanical closure mechanisms)?: Our database includes 43 publications tagged with this CPC code.
Is patent activity under CPC E03C1/23 growing?: Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).