Multistep processes comprising different kinds of membrane processes selected from ultrafiltration or microfiltration

Multistep processes comprising different kinds of membrane processes selected from ultrafiltration or microfiltration · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeB01D61/149
Official title{Multistep processes comprising different kinds of membrane processes selected from ultrafiltration or microfiltration}
Display labelMultistep processes comprising different kinds of membrane processes selected from ultrafiltration or microfiltration
Total patents96

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
20152
20162
20171
20184
201912
20208
202112
202215
202314
202413
202510
20263

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 B01D61/149?
CPC B01D61/149 is the Cooperative Patent Classification code for “Multistep processes comprising different kinds of membrane processes selected from ultrafiltration or microfiltration.”
How many patents are filed under CPC B01D61/149 (Multistep processes comprising different kinds of membrane processes selected from ultrafiltration or microfiltration)?
Our database includes 96 publications tagged with this CPC code.
Is patent activity under CPC B01D61/149 growing?
Publication counts under this code: 13 in 2024 vs 10 in 2025 (latest complete years).