Spring and manufacture method thereof
US-2019390727-A1 · Dec 26, 2019 · US
Mechanical Engineering
Mechanical Engineering · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F16F1/021 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 163 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 12 |
| 2017 | 14 |
| 2018 | 16 |
| 2019 | 9 |
| 2020 | 15 |
| 2021 | 17 |
| 2022 | 20 |
| 2023 | 14 |
| 2024 | 23 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Spiral timepiece spring
US-2018373202-A1 · Dec 27, 2018 · US
Metallic nanospring and method for manufacturing of the same
US-2018327919-A1 · Nov 15, 2018 · US
Leaf spring, camera module drive mechanism, electronic terminal, and method for producing leaf spring
US-10126521-B2 · Nov 13, 2018 · US
Wire material for elastic member and elastic member
US-2018297297-A1 · Oct 18, 2018 · US
Coil spring
US-2018298972-A1 · Oct 18, 2018 · US
Hollow seamless steel pipe for spring
US-2018265952-A1 · Sep 20, 2018 · US
Variable-stiffness actuator
US-2018266402-A1 · Sep 20, 2018 · US
Tubular spring for motor vehicles, and a method for producing a tubular spring
US-2018244125-A1 · Aug 30, 2018 · US
Tube spring for motor vehicles and method for producing a tube spring
US-2018236835-A1 · Aug 23, 2018 · US
Spring steel for suspension and method for producing same
US-2018230566-A1 · Aug 16, 2018 · US
Steel for spring, and method for producing spring
US-10041160-B2 · Aug 7, 2018 · US
Elastic member and wire for elastic member
US-2018180126-A1 · Jun 28, 2018 · US
Resonator with reduced sensitivity to climatic variations
US-10001750-B2 · Jun 19, 2018 · US
High-strength spring steel wire with excellent hydrogen embrittlement resistance, manufacturing process therefor, and high-strength spring
US-9970072-B2 · May 15, 2018 · US
Heat-treated steel wire having excellent fatigue-resistance characteristics
US-2018073093-A1 · Mar 15, 2018 · US
Part comprising a structure and a shape memory alloy element
US-9902142-B2 · Feb 27, 2018 · US
Spring mechanism and linear motion displacement mechanism
US-9845851-B2 · Dec 19, 2017 · US
Stabilizer
US-2017349962-A1 · Dec 7, 2017 · US
Production method for stabilizers
US-2017349961-A1 · Dec 7, 2017 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16F1/021?
- CPC F16F1/021 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F16F1/021 (Mechanical Engineering)?
- Our database includes 163 publications tagged with this CPC code.
- Is patent activity under CPC F16F1/021 growing?
- Publication counts under this code: 23 in 2024 vs 5 in 2025 (latest complete years).