What is CPC F04D29/288?

CPC F04D29/288 is the Cooperative Patent Classification code for “Part of the wheel having an ejecting effect, e.g. being bladeless diffuser.”

How many patents are filed under CPC F04D29/288 (Part of the wheel having an ejecting effect, e.g. being bladeless diffuser)?

Our database includes 37 publications tagged with this CPC code.

Publication counts under this code: 6 in 2024 vs 3 in 2025 (latest complete years).

Part of the wheel having an ejecting effect, e.g. being bladeless diffuser · 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	F04D29/288
Official title	{Part of the wheel having an ejecting effect, e.g. being bladeless diffuser}
Display label	Part of the wheel having an ejecting effect, e.g. being bladeless diffuser
Total patents	37

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

Filing activity over the last five years is rapidly 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 F04D29/288?: CPC F04D29/288 is the Cooperative Patent Classification code for “Part of the wheel having an ejecting effect, e.g. being bladeless diffuser.”
How many patents are filed under CPC F04D29/288 (Part of the wheel having an ejecting effect, e.g. being bladeless diffuser)?: Our database includes 37 publications tagged with this CPC code.
Is patent activity under CPC F04D29/288 growing?: Publication counts under this code: 6 in 2024 vs 3 in 2025 (latest complete years).