B21J 9/022
Multi-stage forging presses
Official title: {multi-stage forging presses (handling devices B21K27/00)}
B21J9/022 (Multi-stage forging presses) appears on 95 US grants and 95 published applications in this corpus.
Search patents in B21J- Granted patents
- 95
- Published applications
- 95
- Assignees
- 68
- Inventors
- 181
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 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 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 3 |
| 2006 | 1 | 5 |
| 2007 | 4 | 5 |
| 2008 | 4 | 4 |
| 2009 | 3 | 2 |
| 2010 | 4 | 1 |
| 2011 | 2 | 4 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 2 | 6 |
| 2015 | 6 | 5 |
| 2016 | 4 | 9 |
| 2017 | 6 | 7 |
| 2018 | 5 | 8 |
| 2019 | 4 | 4 |
| 2020 | 4 | 6 |
| 2021 | 1 | 2 |
| 2022 | 5 | 3 |
| 2023 | 1 | 6 |
| 2024 | 5 | 4 |
| 2025 | 2 | 3 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Forging press for hot forging of asymmetric to symmetric rail and process of forging thereof26 May 2026US RE50,897 E1Savita Nowar
- Method for automated pass schedule calculation in forging stepped shafts31 Mar 2026US 12,589,430 B2SMS group GmbH
- Method and plant for the fast manufacturing of fasteners8 Apr 2025US 12,269,086 B2Poggipolini S.P.A.
- Forged golf club head21 Jan 2025US 12,202,032 B2Karsten Manufacturing Corporation
- Method and system that produces formed parts by a multi-stage press3 Sep 2024US 12,076,779 B2WAFIOS Umformtechnik GmbH
- Progressive area forging method1 Oct 2026US 2026/0295654 A1Doosan Enerbility Co., Ltd.
- Multi-stage forging process16 Jul 2026US 2026/0199747 A1Karsten Manufacturing Corporation
- Press tool holder, press tool, press tool system, press tool machine and method for producing a press moulding and method for adjusting a press tool machine or a press tool holder19 Feb 2026US 2026/0048429 A1KAMAX Holding GmbH & Co. KG
- Forming Machine Having a Cutting Device14 Aug 2025US 2025/0256318 A1Hatebur Umformmaschinen AG
- Multi-stage forging process22 May 2025US 2025/0161768 A1Karsten Manufacturing Corporation
Most cited
By later US patents
- Progressive die apparatus and method for making a lead alloy battery terminal30US 5,655,400 ATulip Corporation · 1997
- Multistage metal-forming machine tool having tool combination blocks16US 6,658,913 B1Hatebur Umformmaschinen AG · 2003
- Method of producing forging machines13US 5,105,649 AThe National Machinery Company · 1992
- Quick-change tooling for progressive formers and the like12US 4,898,017 AThe National Machinery Company · 1990
- Adjusting plate for a press11US 6,408,673 B1Schuler Pressen GmbH · 2002