What is CPC F04D29/524?

CPC F04D29/524 is the Cooperative Patent Classification code for “shiftable members for obturating part of the flow path.”

How many patents are filed under CPC F04D29/524 (shiftable members for obturating part of the flow path)?

Our database includes 81 publications tagged with this CPC code.

Publication counts under this code: 8 in 2024 vs 4 in 2025 (latest complete years).

shiftable members for obturating part of the flow path · 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	F04D29/524
Official title	{shiftable members for obturating part of the flow path}
Display label	shiftable members for obturating part of the flow path
Total patents	81

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

Filing activity over the last five years is rapidly 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 F04D29/524?: CPC F04D29/524 is the Cooperative Patent Classification code for “shiftable members for obturating part of the flow path.”
How many patents are filed under CPC F04D29/524 (shiftable members for obturating part of the flow path)?: Our database includes 81 publications tagged with this CPC code.
Is patent activity under CPC F04D29/524 growing?: Publication counts under this code: 8 in 2024 vs 4 in 2025 (latest complete years).