What is CPC B01D46/249?

CPC B01D46/249 is the Cooperative Patent Classification code for “Quadrangular e.g. square or diamond.”

How many patents are filed under CPC B01D46/249 (Quadrangular e.g. square or diamond)?

Our database includes 218 publications tagged with this CPC code.

Publication counts under this code: 11 in 2024 vs 12 in 2025 (latest complete years).

Quadrangular e.g. square or diamond · Cooperative Patent Classification (CPC)

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

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	B01D46/249
Official title	{Quadrangular e.g. square or diamond}
Display label	Quadrangular e.g. square or diamond
Total patents	218

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

Filing activity over the last five years is declining.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Answers are generated from the same data shown on this page.

What is CPC B01D46/249?: CPC B01D46/249 is the Cooperative Patent Classification code for “Quadrangular e.g. square or diamond.”
How many patents are filed under CPC B01D46/249 (Quadrangular e.g. square or diamond)?: Our database includes 218 publications tagged with this CPC code.
Is patent activity under CPC B01D46/249 growing?: Publication counts under this code: 11 in 2024 vs 12 in 2025 (latest complete years).