B21C 25/04
Mandrels
B21C25/04 (Mandrels) appears on 54 US grants and 56 published applications in this corpus.
Search patents in B21C- Granted patents
- 54
- Published applications
- 56
- Assignees
- 45
- Inventors
- 150
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 0 |
| 2013 | 0 | 3 |
| 2014 | 1 | 3 |
| 2015 | 1 | 10 |
| 2016 | 5 | 4 |
| 2017 | 2 | 2 |
| 2018 | 2 | 2 |
| 2019 | 3 | 1 |
| 2020 | 2 | 4 |
| 2021 | 2 | 4 |
| 2022 | 4 | 5 |
| 2023 | 2 | 4 |
| 2024 | 2 | 5 |
| 2025 | 5 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Devices and methods for performing shear-assisted extrusion and extrusion processes14 Apr 2026US 12,599,949 B2Battelle Memorial Institute
- Devices and methods for performing shear-assisted extrusion and extrusion processes17 Feb 2026US 12,551,946 B2Battelle Memorial Institute
- Forming method and forming machine for producing a helical toothing of a cylindrical workpiece by extrusion23 Sep 2025US 12,420,331 B2FELSS Systems GmbH
- High speed shear-assisted extrusion22 Jul 2025US 12,365,027 B2Battelle Memorial Institute
- Devices and methods for performing shear-assisted extrusion and extrusion processes15 Jul 2025US 12,358,035 B2Battelle Memorial Institute
- Processes and/or Machines for Producing Continuous Plastic Deformation, and/or Compositions and/or Manufactures Produced Thereby16 Oct 2025US 2025/0319517 A1
- Extrusion conformal cooling devices, methods, and systems5 Jun 2025US 2025/0178057 A1The Regents of the University of Michigan
- Devices and methods for performing shear-assisted extrusion and extrusion processes4 Jul 2024US 2024/0216973 A1Battelle Memorial Institute
- Die assembly and methods for friction stir extrusion4 Apr 2024US 2024/0109112 A1Ohio State Innovation Foundation
- Variable thickness extrusion for variable extrudate product properties14 Mar 2024US 2024/0082896 A1Battelle Memorial Institute
Most cited
By later US patents
- Die for extruding elongate articles having longitudinal orifices11US 5,572,894 AYugen Kaisha Yano Engineering · 1996
- Thermal controlled mandrel with replaceable tip for copper and brass extrusion11US 5,687,604 AExco Technologies Limited · 1997
- Carbide mandrel for micro extrusion of metals7US 5,131,253 A1992
- Device for extruding hollow and semi-hollow sections6US 4,169,366 ASwiss Aluminium Ltd. · 1979
- Method of manufacturing extruded seamless hollow materials6US 4,967,583 AFurukawa Aluminum Co., Ltd. · 1990