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with closed cooling system

with closed cooling system · 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 codeF16D65/813
Official titlewith closed cooling system
Display labelwith closed cooling system
Total patents4

Filing trend

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

Filing activity appears stable based on the most recent years.

Patents filed per year
YearPatents
20202
20231
20251

Representative patents

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