Regeneration of the filtering material or filter elements inside the filter (B01D46/04, B01D46/48 take precedence)

Regeneration of the filtering material or filter elements inside the filter (B01D46/04, B01D46/48 take precedence) · 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 codeB01D46/66
Official titleRegeneration of the filtering material or filter elements inside the filter (B01D46/04, B01D46/48 take precedence)
Display labelRegeneration of the filtering material or filter elements inside the filter (B01D46/04, B01D46/48 take precedence)
Total patents145

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
201516
201615
201712
201817
20198
202012
20218
202218
20238
202416
20259
20266

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 B01D46/66?
CPC B01D46/66 is the Cooperative Patent Classification code for “Regeneration of the filtering material or filter elements inside the filter (B01D46/04, B01D46/48 take precedence).”
How many patents are filed under CPC B01D46/66 (Regeneration of the filtering material or filter elements inside the filter (B01D46/04, B01D46/48 take precedence))?
Our database includes 145 publications tagged with this CPC code.
Is patent activity under CPC B01D46/66 growing?
Publication counts under this code: 16 in 2024 vs 9 in 2025 (latest complete years).