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formed by sleeves for finned tubes

formed by sleeves for finned tubes · 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 codeF28F9/0138
Official title{formed by sleeves for finned tubes}
Display labelformed by sleeves for finned tubes
Total patents21

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
20151
20162
20172
20181
20191
20205
20213
20222
20231
20243

Representative patents

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