Membranes, e.g. feeding or removing reactants or products to or from the catalyst bed through a membrane

Membranes, e.g. feeding or removing reactants or products to or from the catalyst bed through a membrane · 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 codeB01J8/009
Official title{Membranes, e.g. feeding or removing reactants or products to or from the catalyst bed through a membrane}
Display labelMembranes, e.g. feeding or removing reactants or products to or from the catalyst bed through a membrane
Total patents133

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
201512
201614
201712
20186
20198
202013
202114
202213
202313
202419
20257
20262

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 B01J8/009?
CPC B01J8/009 is the Cooperative Patent Classification code for “Membranes, e.g. feeding or removing reactants or products to or from the catalyst bed through a membrane.”
How many patents are filed under CPC B01J8/009 (Membranes, e.g. feeding or removing reactants or products to or from the catalyst bed through a membrane)?
Our database includes 133 publications tagged with this CPC code.
Is patent activity under CPC B01J8/009 growing?
Publication counts under this code: 19 in 2024 vs 7 in 2025 (latest complete years).