What is CPC F28F1/22?

CPC F28F1/22 is the Cooperative Patent Classification code for “the means having portions engaging further tubular elements.”

How many patents are filed under CPC F28F1/22 (the means having portions engaging further tubular elements)?

Our database includes 111 publications tagged with this CPC code.

Publication counts under this code: 12 in 2024 vs 4 in 2025 (latest complete years).

the means having portions engaging further tubular elements · 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	F28F1/22
Official title	the means having portions engaging further tubular elements
Display label	the means having portions engaging further tubular elements
Total patents	111

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 F28F1/22?: CPC F28F1/22 is the Cooperative Patent Classification code for “the means having portions engaging further tubular elements.”
How many patents are filed under CPC F28F1/22 (the means having portions engaging further tubular elements)?: Our database includes 111 publications tagged with this CPC code.
Is patent activity under CPC F28F1/22 growing?: Publication counts under this code: 12 in 2024 vs 4 in 2025 (latest complete years).