Cylindrical body and apparatus
US-12172845-B2 · Dec 24, 2024 · US
Making multi-wall tubes
Making multi-wall tubes · 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 | B21C37/154 |
| Official title | {Making multi-wall tubes} |
| Display label | Making multi-wall tubes |
| Total patents | 71 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 5 |
| 2017 | 6 |
| 2018 | 5 |
| 2019 | 6 |
| 2020 | 7 |
| 2021 | 11 |
| 2022 | 2 |
| 2023 | 9 |
| 2024 | 7 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing pipes having topographic inner structures
US-2024175644-A1 · May 30, 2024 · US
Conduits for transporting fluids and methods of fabricating the same
US-11835156-B2 · Dec 5, 2023 · US
Fabricating pipe-in-pipe (pip) pipelines
US-2023381895-A1 · Nov 30, 2023 · US
Wire drawing method and wire drawing device
US-2023330731-A1 · Oct 19, 2023 · US
Forming process using an outer sacrificial layer
US-11730950-B2 · Aug 22, 2023 · US
Forming method of nickel aluminum alloy tubular part with micro flow channels
US-11724298-B1 · Aug 15, 2023 · US
Connection tube and its method of manufacturing
US-11679428-B2 · Jun 20, 2023 · US
Overlapping and progressive forming method for high-performance multi-element nial-based alloy tubular part
US-2023182188-A1 · Jun 15, 2023 · US
Cylindrical body and apparatus
US-2023097168-A1 · Mar 30, 2023 · US
Shear-Assisted Extrusion Assemblies and Methods
US-2023078467-A1 · Mar 16, 2023 · US
Forming process using an outer sacrificial layer
US-2022040744-A1 · Feb 10, 2022 · US
Ring electrode for a medical device
US-2022040474-A1 · Feb 10, 2022 · US
Steel sheet, tailored blank, hot stamped product, steel pipe, hollow hot stamped product, and method of manufacturing steel sheet
US-2021262075-A1 · Aug 26, 2021 · US
Multiple-Winding Pipe Forming Device and Multiple-Winding Pipe Forming Method
US-2021252576-A1 · Aug 19, 2021 · US
Tube structure and a method for manufacturing a tube structure
US-11084077-B2 · Aug 10, 2021 · US
Steel sheet, tailored blank, hot stamped product, steel pipe, hollow hot stamped product, method of manufacturing steel sheet, method of manufacturing tailored blank, method of manufacturing hot stamped product, method of manufacturing steel pipe, and method of manufacturing hollow hot stamped product
US-2021222804-A1 · Jul 22, 2021 · US
Method for manufacturing a composite tube
US-11054065-B2 · Jul 6, 2021 · US
Heat exchange tube, heat exchanger, and manufacturing method for heat exchange tube
US-2021172686-A1 · Jun 10, 2021 · US
A tube structure and a method for manufacturing a tube structure
US-2021146418-A1 · May 20, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21C37/154?
- CPC B21C37/154 is the Cooperative Patent Classification code for “Making multi-wall tubes.”
- How many patents are filed under CPC B21C37/154 (Making multi-wall tubes)?
- Our database includes 71 publications tagged with this CPC code.
- Is patent activity under CPC B21C37/154 growing?
- Publication counts under this code: 7 in 2024 vs 6 in 2025 (latest complete years).