the compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together

the compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together · Cooperative Patent Classification (CPC)

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

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeF04D29/285
Official title{the compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together}
Display labelthe compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together
Total patents44

Filing trend

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

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
20155
20161
20172
20184
20195
20214
20224
20232
20245
202512

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

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

What is CPC F04D29/285?
CPC F04D29/285 is the Cooperative Patent Classification code for “the compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together.”
How many patents are filed under CPC F04D29/285 (the compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together)?
Our database includes 44 publications tagged with this CPC code.
Is patent activity under CPC F04D29/285 growing?
Publication counts under this code: 5 in 2024 vs 12 in 2025 (latest complete years).