Purification; Precipitation; Filtration

Purification; Precipitation; Filtration · 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 codeC09B67/0096
Official title{Purification; Precipitation; Filtration}
Display labelPurification; Precipitation; Filtration
Total patents93

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
20151
20167
201710
20187
20195
202010
202112
202213
202311
202410
20257

Representative patents

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

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C09B67/0096?
CPC C09B67/0096 is the Cooperative Patent Classification code for “Purification; Precipitation; Filtration.”
How many patents are filed under CPC C09B67/0096 (Purification; Precipitation; Filtration)?
Our database includes 93 publications tagged with this CPC code.
Is patent activity under CPC C09B67/0096 growing?
Publication counts under this code: 10 in 2024 vs 7 in 2025 (latest complete years).