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the valve being a flexible annular ring

the valve being a flexible annular ring · 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 codeF04B53/1075
Official title{the valve being a flexible annular ring}
Display labelthe valve being a flexible annular ring
Total patents23

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
20161
20201
20215
20222
20236
20244
20252
20262

Representative patents

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