B21J 5/02
Die forging
Official title: Die forging; Trimming by making use of special dies {; Punching during forging}
B21J5/02 (Die forging) appears on 414 US grants and 427 published applications in this corpus.
Search patents in B21J- Granted patents
- 414
- Published applications
- 427
- Assignees
- 284
- Inventors
- 1,046
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 10 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 12 | 4 |
| 2002 | 8 | 6 |
| 2003 | 4 | 12 |
| 2004 | 9 | 7 |
| 2005 | 4 | 10 |
| 2006 | 7 | 12 |
| 2007 | 11 | 10 |
| 2008 | 4 | 11 |
| 2009 | 7 | 15 |
| 2010 | 9 | 13 |
| 2011 | 9 | 12 |
| 2012 | 9 | 12 |
| 2013 | 9 | 11 |
| 2014 | 9 | 18 |
| 2015 | 15 | 46 |
| 2016 | 16 | 25 |
| 2017 | 34 | 28 |
| 2018 | 16 | 34 |
| 2019 | 33 | 33 |
| 2020 | 19 | 33 |
| 2021 | 18 | 18 |
| 2022 | 25 | 17 |
| 2023 | 8 | 14 |
| 2024 | 17 | 10 |
| 2025 | 8 | 7 |
| 2026 | 4 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for manufacturing a large-sized seamless dome, and corresponding dome4 Aug 2026US 12,697,653 B2Albert & Duval
- Rack bar and steering device7 Jul 2026US 12,673,359 B2Hitachi Astemo, Ltd.
- Sheet metal coining method utilizing bilateral coin punching16 Jun 2026US 12,654,216 B2Schaeffler Technologies AG & Co. KG
- Temperature control system for additive manufacturing and method for same17 Feb 2026US 12,551,972 B2General Electric Company
- Forging and pressing production system and management method therefor9 Dec 2025US 12,491,557 B2
- Two-fire forming forging process for large crank throw8 Oct 2026US 2026/0307136 A1Zhongjuxin Ocean Engineering Equipment Co., Ltd
- Progressive area forging method1 Oct 2026US 2026/0295654 A1Doosan Enerbility Co., Ltd.
- Presswork-based thickness addition forming method and expandable member13 Aug 2026US 2026/0233292 A1Yorozu Corporation
- Method and apparatus for producing a calibrated stamped part21 May 2026US 2026/0138391 A1
- Tubular case with flange and method of manufacturing the same12 Mar 2026US 2026/0070118 A1Dragon Right Co., Ltd.
Most cited
By later US patents
- Macro-fiber process for manufacturing a face for a metal wood golf club74US 6,663,501 B22003
- Precision closed-die forging method70US 4,433,568 AKabushiki Kaisha Wako · 1984
- Forging press and method68US 4,096,730 AUnited States Steel Corporation · 1978
- Large deformation apparatus, the deformation method and the deformed metallic materials38US 6,209,379 B1Agency of Industrial Science and Technology · 2001
- Apparatus and method for thermomechanically forming an aluminide part of a workpiece38US 7,117,707 B2Philip Morris USA Inc. · 2006