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Details, accessories, or equipment peculiar to bell-type furnaces

Details, accessories, or equipment peculiar to bell-type furnaces · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC21D9/673
Official titleDetails, accessories, or equipment peculiar to bell-type furnaces
Display labelDetails, accessories, or equipment peculiar to bell-type furnaces
Total patents13

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
20152
20165
20171
20182
20192
20201

Representative patents

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