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adapted for treating the charge in vacuum or special atmosphere

adapted for treating the charge in vacuum or special atmosphere · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

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CPC classification statistics
Metric	Value
CPC code	C21D9/67
Official title	adapted for treating the charge in vacuum or special atmosphere
Display label	adapted for treating the charge in vacuum or special atmosphere
Total patents	7

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

Filing activity over the last five years is declining.

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