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of ferrous surfaces

of ferrous surfaces · 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 codeC23C8/70
Official titleof ferrous surfaces
Display labelof ferrous surfaces
Total patents18

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
20154
20172
20182
20191
20201
20213
20221
20231
20241
20252

Representative patents

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