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Purification or separation processes

Purification or separation processes · 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 codeC01B21/0405
Official title{Purification or separation processes}
Display labelPurification or separation processes
Total patents13

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
20172
20181
20201
20223
20242
20252
20262

Representative patents

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