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using only anionic ion-exchange material (C13B20/148 takes precedence)

using only anionic ion-exchange material (C13B20/148 takes precedence) · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	C13B20/146
Official title	{using only anionic ion-exchange material (C13B20/148 takes precedence)}
Display label	using only anionic ion-exchange material (C13B20/148 takes precedence)
Total patents	4

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

Filing activity appears stable based on the most recent years.

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