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the vanes having the form of rollers, slippers or the like

the vanes having the form of rollers, slippers or the like · 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 codeF04C2/3447
Official title{the vanes having the form of rollers, slippers or the like}
Display labelthe vanes having the form of rollers, slippers or the like
Total patents18

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
20163
20172
20182
20193
20202
20212
20221
20232
20241

Representative patents

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