Method and machine to manufacture windings around respective supports
US-2025332633-A1 · Oct 30, 2025 · US
externally on a mandrel or the like
externally on a mandrel or the like · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B21F3/04 |
| Official title | externally on a mandrel or the like |
| Display label | externally on a mandrel or the like |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 5 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Coiling machine and production method for coil springs
US-2025178069-A1 · Jun 5, 2025 · US
Coiling machine and coil spring manufacturing method
US-2025178068-A1 · Jun 5, 2025 · US
Reinforced working channel tube
US-2025072736-A1 · Mar 6, 2025 · US
Coil forming device and coil of a rotating electric device
US-12237733-B2 · Feb 25, 2025 · US
Method and device for manufacturing an electromagnetic navigation sensor
US-2024201659-A1 · Jun 20, 2024 · US
Coiling machine, method for manufacturing coil spring, and coil spring
US-11964321-B2 · Apr 23, 2024 · US
Devices for vascular occlusion
US-2023270445-A1 · Aug 31, 2023 · US
Devices for vascular occlusion
US-11678888-B2 · Jun 20, 2023 · US
Automated wire processing system and methods
US-11569009-B2 · Jan 31, 2023 · US
Coiling machine, method for manufacturing coil spring, and coil spring
US-2021362274-A1 · Nov 25, 2021 · US
Coiling machine, method for manufacturing coil spring, and coil spring
US-2021323047-A1 · Oct 21, 2021 · US
Devices For Vascular Occlusion
US-2021228214-A1 · Jul 29, 2021 · US
Devices for vascular occlusion
US-10980545-B2 · Apr 20, 2021 · US
Coil forming device and coil of a rotating electric device
US-2021013783-A1 · Jan 14, 2021 · US
Coil forming device and coil of a rotating electric device
US-10840784-B2 · Nov 17, 2020 · US
Devices For Vascular Occlusion
US-2020323534-A1 · Oct 15, 2020 · US
Devices for vascular occlusion
US-10729447-B2 · Aug 4, 2020 · US
Helical compression spring and method for producing same
US-2020240487-A1 · Jul 30, 2020 · US
Device for manufacturing coil spring and method for manufacturing coil spring
US-10549334-B2 · Feb 4, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21F3/04?
- CPC B21F3/04 is the Cooperative Patent Classification code for “externally on a mandrel or the like.”
- How many patents are filed under CPC B21F3/04 (externally on a mandrel or the like)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC B21F3/04 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).