B21C 23/32
Lubrication of metal being extruded or of dies, or the like
Official title: Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
B21C23/32 (Lubrication of metal being extruded or of dies, or the like) appears on 50 US grants and 32 published applications in this corpus.
Search patents in B21C- Granted patents
- 50
- Published applications
- 32
- Assignees
- 40
- Inventors
- 120
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 1 | 3 |
| 2015 | 1 | 2 |
| 2016 | 2 | 1 |
| 2017 | 3 | 4 |
| 2018 | 1 | 5 |
| 2019 | 1 | 0 |
| 2020 | 3 | 2 |
| 2021 | 2 | 5 |
| 2022 | 3 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Helical friction extrusion machine and extrusion forming method23 Sep 2025US 12,420,324 B1Shandong University
- Extrusion component having lubricious coating and method of extruding abrasive material11 Mar 2025US 12,246,367 B2Corning Incorporated
- Method for manufacturing cold-forged, extruded aluminum alloy tube16 Jan 2024US 11,872,616 B2Jin Yuncheng Enterprise Co., Ltd.
- Method of manufacturing two tubes simultaneously and machine for use therein11 Jul 2023US 11,697,143 B2American Axle & Manufacturing, Inc.
- Cold-extrusion forming method for unsymmetrical ferrule blanks15 Nov 2022US 11,498,103 B2Zhejaing Jingli Bearing Technology Co., Ltd.
- Lubricant relase agent composition25 May 2023US 2023/0159431 A1Baraldi S.R.L.
- Extrusion component having lubricious coating and method of extruding abrasive material20 Oct 2022US 2022/0331851 A1Corning Incorporated
- Extrusion press device and extrusion press method2 Dec 2021US 2021/0370373 A1Ube Machinery Corporation, Ltd.
- Extrusion forming apparatus, method using the same, and product therefrom10 Jun 2021US 2021/0170463 A1Metal Industries Research & Development Centre
- Lubricant and method for manufacturing magnesium alloy tubes3 Jun 2021US 2021/0163839 A1BIOTRONIK SE & Co. KG
Most cited
By later US patents
- Lubricant for forming metals at elevated temperatures37US 4,147,639 AArthur D. Little, Inc. · 1979
- Warm forging method for cup-shaped pieces15US 4,312,210 AKobe Steel, Ltd. · 1982
- Lubrication processes for enhanced forgeability15US 9,327,342 B2ATI Properties, Inc. · 2016
- Rapid extrusion of hot-short-sensitive alloys14US 4,462,234 ABattelle Development Corporation · 1984
- Reducible glass lubricants for metalworking14US 5,743,121 AGeneral Electric Company · 1998