PatentsDB
This page is not indexed by search engines while we improve data quality.

Purification; Separation {; Stabilisation (C01B21/40 takes precedence)}

Purification; Separation {; Stabilisation (C01B21/40 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
MetricValue
CPC codeC01B21/46
Official titlePurification; Separation {; Stabilisation (C01B21/40 takes precedence)}
Display labelPurification; Separation {; Stabilisation (C01B21/40 takes precedence)}
Total patents21

Filing trend

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

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
20161
20171
20202
20224
20233
20245
20255

Representative patents

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