PatentsDB

by permanent joints, e.g. by welding

by permanent joints, e.g. by welding · Cooperative Patent Classification (CPC)

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

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeF28F9/268
Official title{by permanent joints, e.g. by welding}
Display labelby permanent joints, e.g. by welding
Total patents54

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
20154
20173
20185
20193
20205
20215
20226
20239
20249
20254
20261

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 F28F9/268?
CPC F28F9/268 is the Cooperative Patent Classification code for “by permanent joints, e.g. by welding.”
How many patents are filed under CPC F28F9/268 (by permanent joints, e.g. by welding)?
Our database includes 54 publications tagged with this CPC code.
Is patent activity under CPC F28F9/268 growing?
Publication counts under this code: 9 in 2024 vs 4 in 2025 (latest complete years).