B21D 31/06
Deforming sheet metal, tubes or profiles by sequential impacts
Official title: Deforming sheet metal, tubes or profiles by sequential impacts, e.g. hammering, beating, peen forming (forging hammers B21J7/00)
B21D31/06 (Deforming sheet metal, tubes or profiles by sequential impacts) appears on 64 US grants and 58 published applications in this corpus.
Search patents in B21D- Granted patents
- 64
- Published applications
- 58
- Assignees
- 54
- Inventors
- 149
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 2 | 2 |
| 2014 | 0 | 6 |
| 2015 | 3 | 8 |
| 2016 | 3 | 7 |
| 2017 | 6 | 4 |
| 2018 | 4 | 2 |
| 2019 | 4 | 3 |
| 2020 | 4 | 2 |
| 2021 | 1 | 1 |
| 2022 | 5 | 3 |
| 2023 | 3 | 3 |
| 2024 | 3 | 2 |
| 2025 | 2 | 4 |
By publication year. Applications have been published since 2001.
Recent patents
- Device and method for continuously producing an at least partly hollow shaft having a varying inner and/or outer diameter23 Dec 2025US 12,502,705 B2MAGNA Powertrain AG & Co KG
- Vehicle body element dent system and method4 Feb 2025US 12,214,397 B2
- Device for strengthening the surface of products, method and use thereof26 Nov 2024US 12,151,275 B2Ustav Termomechaniky Av Cr, V.V.I.
- Peening apparatus and method of peening using the same16 Apr 2024US 11,958,095 B2Industry-Academic Cooperation Foundation, Dankook University
- Steel barrel rotation assembly19 Mar 2024US 11,933,637 B2
- Method for repairing a dent present on a wall, and repair device for the implementation thereof25 Sep 2025US 2025/0296133 A1
- Modular attachments for a planishing hammer5 Jun 2025US 2025/0178062 A1
- Fatigue crack growth suppressing method for bent portion of metal sheet, and automotive part6 Feb 2025US 2025/0041924 A1Jfe Steel Corporation
- Method for manufacturing fin9 Jan 2025US 2025/0012517 A1Daikin Industries, Ltd.
- Device and method for continuously producing an at least partly hollow shaft having a varying inner and/or outer diameter6 Jun 2024US 2024/0181515 A1MAGNA Powertrain AG & Co KG
Most cited
By later US patents
- Pneumatic hammer apparatus29US 5,119,667 A1992
- Method of forming a textured pattern on a metal plate which pattern is transformed to a plastic part, and a press plate and plastic part produced thereby24US 5,526,664 AProgressive Technologies, Inc. · 1996
- Pre-loading of components during laser peenforming17US 6,670,578 B2The Regents of the University of California · 2003
- Method and apparatus for reducing force needed to form a shape from a sheet metal17US 8,033,151 B2The Boeing Company · 2011
- Method and apparatus for the surface working and for reworking of workpieces12US 4,226,111 A1980