Modification or after-treatment of ion-exchangers

Modification or after-treatment of ion-exchangers · 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 codeB01J47/016
Official titleModification or after-treatment of ion-exchangers
Display labelModification or after-treatment of ion-exchangers
Total patents96

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
20157
20164
20176
20189
201912
202015
202110
20225
20238
202412
20258

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 B01J47/016?
CPC B01J47/016 is the Cooperative Patent Classification code for “Modification or after-treatment of ion-exchangers.”
How many patents are filed under CPC B01J47/016 (Modification or after-treatment of ion-exchangers)?
Our database includes 96 publications tagged with this CPC code.
Is patent activity under CPC B01J47/016 growing?
Publication counts under this code: 12 in 2024 vs 8 in 2025 (latest complete years).