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with direct resistance heating

with direct resistance heating · 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 codeC21D9/62
Official titlewith direct resistance heating
Display labelwith direct resistance heating
Total patents14

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
20172
20191
20202
20212
20223
20232
20251

Representative patents

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