What is CPC F04D29/005?

CPC F04D29/005 is the Cooperative Patent Classification code for “Mechanical Engineering.”

How many patents are filed under CPC F04D29/005 (Mechanical Engineering)?

Our database includes 227 publications tagged with this CPC code.

Publication counts under this code: 27 in 2024 vs 21 in 2025 (latest complete years).

Mechanical Engineering · Cooperative Patent Classification (CPC)

Engines, pumps, lighting, heating, and mechanical systems.

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	F04D29/005
Official title	—
Display label	Mechanical Engineering (mapped technology topic)
Total patents	227

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.

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Answers are generated from the same data shown on this page.

What is CPC F04D29/005?: CPC F04D29/005 is the Cooperative Patent Classification code for “Mechanical Engineering.”
How many patents are filed under CPC F04D29/005 (Mechanical Engineering)?: Our database includes 227 publications tagged with this CPC code.
Is patent activity under CPC F04D29/005 growing?: Publication counts under this code: 27 in 2024 vs 21 in 2025 (latest complete years).