Helical friction extrusion machine and extrusion forming method
US-12420324-B1 · Sep 23, 2025 · US
by direct extrusion
by direct extrusion · 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 | B21C23/04 |
| Official title | by direct extrusion |
| Display label | by direct extrusion |
| Total patents | 36 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2018 | 1 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 6 |
| 2023 | 3 |
| 2024 | 9 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Shape processes, feedstock materials, conductive materials and/or assemblies
US-12403516-B2 · Sep 2, 2025 · US
Shear-assisted extrusion assemblies and methods
US-12397334-B2 · Aug 26, 2025 · US
Functionally graded coatings and claddings
US-12377455-B2 · Aug 5, 2025 · US
Devices and methods for performing shear-assisted extrusion, extrusion feedstocks, extrusion processes, and methods for preparing metal sheets
US-12337366-B2 · Jun 24, 2025 · US
Extrusion system
US-2025144689-A1 · May 8, 2025 · US
Shear-assisted extrusion configurations
US-2025041919-A1 · Feb 6, 2025 · US
Multi-axis shear-assisted extrusion machine
US-2025041920-A1 · Feb 6, 2025 · US
Shear-assisted extrusion assemblies and methods
US-2024307939-A1 · Sep 19, 2024 · US
Shear-assisted extrusion with variable extrudate properties
US-2024286183-A1 · Aug 29, 2024 · US
Method for making profile with micro-hole
US-12053814-B2 · Aug 6, 2024 · US
Metal matrix composite material and method
US-2024209476-A1 · Jun 27, 2024 · US
Electromagnetic extrusion
US-11951519-B2 · Apr 9, 2024 · US
Die assembly and methods for friction stir extrusion
US-2024109112-A1 · Apr 4, 2024 · US
Methods and tools for friction extrusion of composite extrudates
US-2024100581-A1 · Mar 28, 2024 · US
Shear-assisted extrusion assemblies and methods
US-11919061-B2 · Mar 5, 2024 · US
Front loading extrusion press for producing metal extrudates by extruding a billet
US-2024001421-A1 · Jan 4, 2024 · US
Extrusion processes for forming extrusions of a desired composition from a feedstock
US-11684959-B2 · Jun 27, 2023 · US
Functionally Graded Coatings and Claddings
US-2023088412-A1 · Mar 23, 2023 · US
Shear-Assisted Extrusion Assemblies and Methods
US-2023078467-A1 · Mar 16, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21C23/04?
- CPC B21C23/04 is the Cooperative Patent Classification code for “by direct extrusion.”
- How many patents are filed under CPC B21C23/04 (by direct extrusion)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC B21C23/04 growing?
- Publication counts under this code: 9 in 2024 vs 8 in 2025 (latest complete years).