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the piston oscillating around a fixed axis

the piston oscillating around a fixed axis · 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 codeF04C21/002
Official title{the piston oscillating around a fixed axis}
Display labelthe piston oscillating around a fixed axis
Total patents16

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
20171
20182
20193
20204
20214
20231
20241

Representative patents

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