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Phosphonium and sulfonium compounds

Phosphonium and sulfonium compounds · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

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CPC classification statistics
Metric	Value
CPC code	C09K23/20
Official title	Phosphonium and sulfonium compounds
Display label	Phosphonium and sulfonium compounds
Total patents	5

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

Filing activity appears to be growing based on the most recent years.

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