Wound springs {(making springs by coiling wire B21F3/00)}

Wound springs {(making springs by coiling wire B21F3/00)} · 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 codeF16F1/04
Official titleWound springs {(making springs by coiling wire B21F3/00)}
Display labelWound springs {(making springs by coiling wire B21F3/00)}
Total patents132

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
201516
201616
201722
201813
20199
202013
20218
202210
202314
20249
20251
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 F16F1/04?
CPC F16F1/04 is the Cooperative Patent Classification code for “Wound springs {(making springs by coiling wire B21F3/00)}.”
How many patents are filed under CPC F16F1/04 (Wound springs {(making springs by coiling wire B21F3/00)})?
Our database includes 132 publications tagged with this CPC code.
Is patent activity under CPC F16F1/04 growing?
Publication counts under this code: 9 in 2024 vs 1 in 2025 (latest complete years).