What is CPC F16F9/3487?

CPC F16F9/3487 is the Cooperative Patent Classification code for “with spacers or spacing rings.”

How many patents are filed under CPC F16F9/3487 (with spacers or spacing rings)?

Our database includes 54 publications tagged with this CPC code.

Publication counts under this code: 9 in 2024 vs 5 in 2025 (latest complete years).

with spacers or spacing rings · Cooperative Patent Classification (CPC)

Engines, pumps, lighting, heating, and mechanical systems.

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	F16F9/3487
Official title	{with spacers or spacing rings}
Display label	with spacers or spacing rings
Total patents	54

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 F16F9/3487?: CPC F16F9/3487 is the Cooperative Patent Classification code for “with spacers or spacing rings.”
How many patents are filed under CPC F16F9/3487 (with spacers or spacing rings)?: Our database includes 54 publications tagged with this CPC code.
Is patent activity under CPC F16F9/3487 growing?: Publication counts under this code: 9 in 2024 vs 5 in 2025 (latest complete years).