Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation

Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation · Cooperative Patent Classification (CPC)

Textile and paper production, treatment, and products.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeD06B23/20
Official titleArrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
Display labelArrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
Total patents34

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
20171
20184
20196
20204
20213
20222
20234
20242
20257
20261

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 D06B23/20?
CPC D06B23/20 is the Cooperative Patent Classification code for “Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation.”
How many patents are filed under CPC D06B23/20 (Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation)?
Our database includes 34 publications tagged with this CPC code.
Is patent activity under CPC D06B23/20 growing?
Publication counts under this code: 2 in 2024 vs 7 in 2025 (latest complete years).