What is CPC B65F2001/1661?

CPC B65F2001/1661 is the Cooperative Patent Classification code for “relating to noise reduction, e.g. during opening or closing.”

How many patents are filed under CPC B65F2001/1661 (relating to noise reduction, e.g. during opening or closing)?

Our database includes 30 publications tagged with this CPC code.

Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).

relating to noise reduction, e.g. during opening or closing · 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	B65F2001/1661
Official title	{relating to noise reduction, e.g. during opening or closing}
Display label	relating to noise reduction, e.g. during opening or closing
Total patents	30

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

Filing activity over the last five years is growing.

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 B65F2001/1661?: CPC B65F2001/1661 is the Cooperative Patent Classification code for “relating to noise reduction, e.g. during opening or closing.”
How many patents are filed under CPC B65F2001/1661 (relating to noise reduction, e.g. during opening or closing)?: Our database includes 30 publications tagged with this CPC code.
Is patent activity under CPC B65F2001/1661 growing?: Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).