Aluminum alloy extruded multi-hole tube for heat exchanger and method for manufacturing the same
US-12454741-B2 · Oct 28, 2025 · US
Making tubes with multiple passages
Making tubes with multiple passages · 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 | B21C37/151 |
| Official title | {Making tubes with multiple passages} |
| Display label | Making tubes with multiple passages |
| Total patents | 58 |
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 | 4 |
| 2016 | 4 |
| 2017 | 1 |
| 2018 | 6 |
| 2019 | 3 |
| 2020 | 10 |
| 2021 | 7 |
| 2022 | 6 |
| 2023 | 9 |
| 2024 | 7 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydroforming of aluminum extrusions for automotive battery tray structures
US-12162058-B2 · Dec 10, 2024 · US
Extruded, multi-hole-pipe and manufacturing method thereof
US-2024384817-A1 · Nov 21, 2024 · US
Extruded material and method for producing the same
US-12083570-B2 · Sep 10, 2024 · US
Method for calibrating a metal profile blank which is configured as a hollow-chamber profile and which has at least one solid wall
US-11958097-B2 · Apr 16, 2024 · US
Tube assembly for heat management apparatus and method of manufacturing the same
US-11927397-B2 · Mar 12, 2024 · US
Vehicle front rail
US-2024075987-A1 · Mar 7, 2024 · US
Heat exchange tube, heat exchanger, and manufacturing method for heat exchange tube
US-11920875-B2 · Mar 5, 2024 · US
Extruded material and method for producing the same
US-2023405658-A1 · Dec 21, 2023 · US
Conduits for transporting fluids and methods of fabricating the same
US-11835156-B2 · Dec 5, 2023 · US
Heat pipe and device
US-2023332842-A1 · Oct 19, 2023 · US
Forming method of nickel aluminum alloy tubular part with micro flow channels
US-11724298-B1 · Aug 15, 2023 · US
Heat pipe, method for manufacturing the same, and device
US-11725884-B2 · Aug 15, 2023 · US
Aluminum alloy extruded multi-hole tube for heat exchanger and method for manufacturing the same
US-2023250523-A1 · Aug 10, 2023 · US
Aluminum alloy extruded multi-hole tube for heat exchanger and method for manufacturing the same
US-2023220521-A1 · Jul 13, 2023 · US
Beam assembly with multi-hollow formation
US-2023116787-A1 · Apr 13, 2023 · US
Hydroforming of aluminum extrusions for automotive battery tray structures
US-2023048459-A1 · Feb 16, 2023 · US
Aluminum alloy with improved extrudability and corrosion resistance
US-2022396858-A1 · Dec 15, 2022 · US
Beam assembly with multi-hollow formation
US-11524645-B2 · Dec 13, 2022 · US
Heat exchange tube and heat exchanger having the same
US-11512907-B2 · Nov 29, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21C37/151?
- CPC B21C37/151 is the Cooperative Patent Classification code for “Making tubes with multiple passages.”
- How many patents are filed under CPC B21C37/151 (Making tubes with multiple passages)?
- Our database includes 58 publications tagged with this CPC code.
- Is patent activity under CPC B21C37/151 growing?
- Publication counts under this code: 7 in 2024 vs 1 in 2025 (latest complete years).