Drawing machine, drawing method and drawing mandrel
US-12472546-B2 · Nov 18, 2025 · US
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Mandrels; Mounting or adjusting same
Mandrels; Mounting or adjusting same · 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 | B21C3/16 |
| Official title | Mandrels; Mounting or adjusting same |
| Display label | Mandrels; Mounting or adjusting same |
| Total patents | 22 |
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 | 2 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Micro fiber and method of manufacturing same
US-11772143-B2 · Oct 3, 2023 · US
Drawing machine, drawing method and drawing mandrel
US-2023130543-A1 · Apr 27, 2023 · US
Method of manufacturing variable wall thickness steel pipe and variable wall thickness steel pipe
US-11590547-B2 · Feb 28, 2023 · US
Conduits for transporting fluids and methods of fabricating the same
US-11512807-B2 · Nov 29, 2022 · US
Micro fiber and method of manufacturing same
US-2022032353-A1 · Feb 3, 2022 · US
Conduits for transporting fluids and methods of fabricating the same
US-2021270405-A1 · Sep 2, 2021 · US
Conduits for transporting fluids
US-11035515-B2 · Jun 15, 2021 · US
Conduits for transporting fluids and methods of fabricating the same
US-2020200318-A1 · Jun 25, 2020 · US
Preparing a tube end for rod drawing
US-10639690-B2 · May 5, 2020 · US
Method for producing a rifled tube
US-10632521-B2 · Apr 28, 2020 · US
Method of manufacturing variable wall thickness steel pipe and variable wall thickness steel pipe
US-2019076902-A1 · Mar 14, 2019 · US
Preparing a tube end for rod drawing
US-2018021826-A1 · Jan 25, 2018 · US
Method for producing a rifled tube
US-2017320124-A1 · Nov 9, 2017 · US
Tube expanding method for manufacturing metal tube
US-9707614-B2 · Jul 18, 2017 · US
Device for drawing tubular workpiece
US-9636727-B2 · May 2, 2017 · US
Inner surface regulation tool, plug, mandrel, hot rolling mill, press piercing machine, and drawing machine
US-9486845-B2 · Nov 8, 2016 · US
Systems and methods to cold work metal/composite structures
US-9364880-B1 · Jun 14, 2016 · US
Inner surface regulation tool, plug, mandrel, hot rolling mill, press piercing machine, and drawing machine
US-2015314346-A1 · Nov 5, 2015 · US
Device and method for drawing metal tube
US-2015174631-A1 · Jun 25, 2015 · US