B21C 26/00
Rams or plungers for metal extruding
Official title: Rams or plungers for metal extruding; Discs therefor
B21C26/00 (Rams or plungers for metal extruding) appears on 46 US grants and 35 published applications in this corpus.
Search patents in B21C- Granted patents
- 46
- Published applications
- 35
- Assignees
- 35
- Inventors
- 97
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 3 |
| 2014 | 0 | 1 |
| 2015 | 1 | 4 |
| 2016 | 2 | 1 |
| 2017 | 3 | 3 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 2 | 1 |
| 2023 | 0 | 3 |
| 2024 | 4 | 3 |
| 2025 | 2 | 1 |
| 2026 | 0 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Shear-assisted extrusion assemblies and methods26 Aug 2025US 12,397,334 B2Battelle Memorial Institute
- Mold for preparing large-size rare earth magnesium alloy ingot without tail shrinkage by back pressure severe plastic deformation4 Feb 2025US 12,214,394 B2Shanxi Zhongbei Ruizhi Jingcheng Technology Co., Ltd.
- Dummy block for extrusion press17 Sep 2024US 12,090,537 B2Exco Technologies Limited
- Extruded material and method for producing the same10 Sep 2024US 12,083,570 B2Kobe Steel, Ltd.
- Shear-assisted extrusion assemblies and methods5 Mar 2024US 11,919,061 B2Battelle Memorial Institute
- Shear Assisted Extrusion Press Apparatus and Components16 Apr 2026US 2026/0102804 A1Atomic 13, LLC
- Shear Assisted Extrusion Press Apparatus and Components16 Apr 2026US 2026/0102805 A1Atomic 13, LLC
- Shear Assisted Extrusion Press Apparatus and Components16 Apr 2026US 2026/0102806 A1Atomic 13, LLC
- Shear Assisted Extrusion Press Apparatus and Components16 Apr 2026US 2026/0102807 A1Atomic 13, LLC
- Shear Assisted Extrusion Press Apparatus and Components16 Apr 2026US 2026/0102808 A1Atomic 13, LLC
Most cited
By later US patents
- Apparatus for metal extrusion14US 4,056,964 ASumitomo Light Metal Industries, Ltd. · 1977
- Extruder14US 5,678,442 AUbe Industries, Ltd. · 1997
- Extrusion press13US 4,084,422 ASchloemann-Siemag Aktiengesellschaft · 1978
- Method of and machine for extruding12US 4,308,742 A1982
- Thermal controlled mandrel with replaceable tip for copper and brass extrusion11US 5,687,604 AExco Technologies Limited · 1997