Helical friction extrusion machine and extrusion forming method
US-12420324-B1 · Sep 23, 2025 · US
Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B21C23/32 |
| Official title | Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied |
| Display label | Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied |
| Total patents | 24 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 1 |
| 2025 | 3 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12420324-B1 · Sep 23, 2025 · US
US-12246367-B2 · Mar 11, 2025 · US
US-2025066897-A1 · Feb 27, 2025 · US
US-11697143-B2 · Jul 11, 2023 · US
US-2022331851-A1 · Oct 20, 2022 · US
US-11401478-B2 · Aug 2, 2022 · US
US-11266491-B2 · Mar 8, 2022 · US
US-2021170463-A1 · Jun 10, 2021 · US
US-2021163839-A1 · Jun 3, 2021 · US
US-2021069765-A1 · Mar 11, 2021 · US
US-10882092-B2 · Jan 5, 2021 · US
US-10864566-B2 · Dec 15, 2020 · US
US-10843246-B2 · Nov 24, 2020 · US
US-2020030863-A1 · Jan 30, 2020 · US
US-10207312-B2 · Feb 19, 2019 · US
US-2018161144-A1 · Jun 14, 2018 · US
US-9913707-B2 · Mar 13, 2018 · US
US-2018001364-A1 · Jan 4, 2018 · US
US-2017368585-A1 · Dec 28, 2017 · US
US-2017361367-A1 · Dec 21, 2017 · US