Internal hydroforming method for manufacturing heat pipe wicks utilizing a hollow mandrel and sheath
US-2026042135-A1 · Feb 12, 2026 · US
specially adapted for making tubular articles (bending sheet metal into tubular form by drawing B21D5/10)
specially adapted for making tubular articles (bending sheet metal into tubular form by drawing B21D5/10) · 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 | B21C1/22 |
| Official title | specially adapted for making tubular articles (bending sheet metal into tubular form by drawing B21D5/10) |
| Display label | specially adapted for making tubular articles (bending sheet metal into tubular form by drawing B21D5/10) |
| Total patents | 54 |
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 | 2 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 10 |
| 2022 | 5 |
| 2023 | 10 |
| 2024 | 1 |
| 2025 | 4 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods for forming electronic device housings
US-12526944-B2 · Jan 13, 2026 · US
Internal hydroforming method for manufacturing heat pipe wicks utilizing a hollow mandrel and sheath
US-12447521-B2 · Oct 21, 2025 · US
Wire drawing method and wire drawing device
US-12440879-B2 · Oct 14, 2025 · US
Method for manufacturing a double-wall heat-exchanger tube
US-12397339-B2 · Aug 26, 2025 · US
Stainless steel pipe and method for manufacturing same
US-12331371-B2 · Jun 17, 2025 · US
Method for manufacturing a double-wall heat-exchanger tube
US-2024399440-A1 · Dec 5, 2024 · US
Drawing system for generating profiled metal sections, and method for automatically operating such a drawing system
US-11794230-B2 · Oct 24, 2023 · US
Wire drawing method and wire drawing device
US-2023330731-A1 · Oct 19, 2023 · US
Guidewire having varying diameters and method of making
US-2023302259-A1 · Sep 28, 2023 · US
Rolling straightening machine and method of manufacturing a pipe or tube or a bar using same
US-11731184-B2 · Aug 22, 2023 · US
Methods for forming electronic device housings
US-2023262913-A1 · Aug 17, 2023 · US
Internal hydroforming method for manufacturing heat pipe wicks utilizing a hollow mandrel and sheath
US-2023226587-A1 · Jul 20, 2023 · US
Guidewire having varying diameters and method of making
US-11684759-B2 · Jun 27, 2023 · US
Rolling-bulging forming hydraulic machine for tubular products
US-11679426-B2 · Jun 20, 2023 · US
Stainless steel pipe and method for manufacturing same
US-2023090536-A1 · Mar 23, 2023 · US
Method of forming casting with flow passage, and casting formed by the same
US-11602785-B2 · Mar 14, 2023 · US
Steam generator pipe having a turbulence installation body
US-11512849-B2 · Nov 29, 2022 · US
Extrusion apparatus and method for manufacturing aluminum capillary tube using same
US-11498104-B2 · Nov 15, 2022 · US
Drawing system for generating profiled metal sections, and method for automatically operating such a drawing system
US-2022212238-A1 · Jul 7, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21C1/22?
- CPC B21C1/22 is the Cooperative Patent Classification code for “specially adapted for making tubular articles (bending sheet metal into tubular form by drawing B21D5/10).”
- How many patents are filed under CPC B21C1/22 (specially adapted for making tubular articles (bending sheet metal into tubular form by drawing B21D5/10))?
- Our database includes 54 publications tagged with this CPC code.
- Is patent activity under CPC B21C1/22 growing?
- Publication counts under this code: 1 in 2024 vs 4 in 2025 (latest complete years).