B21D 1/00
Straightening, restoring form or removing local distortions of sheet metal or specific
Official title: Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom (B21D3/00 takes precedence); Stretching sheet metal combined with rolling (working sheet metal of limited length by stretching B21D25/00; by localised hammering B21D31/06)
B21D1/00 (Straightening, restoring form or removing local distortions of sheet metal or specific) appears on 925 US grants and 502 published applications in this corpus.
Search patents in B21D- Granted patents
- 925
- Published applications
- 502
- Assignees
- 362
- Inventors
- 1,337
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 22 | 0 |
| 1978 | 27 | 0 |
| 1979 | 18 | 0 |
| 1980 | 17 | 0 |
| 1981 | 24 | 0 |
| 1982 | 13 | 0 |
| 1983 | 12 | 0 |
| 1984 | 20 | 0 |
| 1985 | 27 | 0 |
| 1986 | 22 | 0 |
| 1987 | 20 | 0 |
| 1988 | 26 | 0 |
| 1989 | 30 | 0 |
| 1990 | 23 | 0 |
| 1991 | 20 | 0 |
| 1992 | 15 | 0 |
| 1993 | 27 | 0 |
| 1994 | 15 | 0 |
| 1995 | 18 | 0 |
| 1996 | 15 | 0 |
| 1997 | 17 | 0 |
| 1998 | 17 | 0 |
| 1999 | 20 | 0 |
| 2000 | 15 | 0 |
| 2001 | 15 | 3 |
| 2002 | 17 | 24 |
| 2003 | 21 | 21 |
| 2004 | 18 | 30 |
| 2005 | 19 | 18 |
| 2006 | 24 | 15 |
| 2007 | 12 | 13 |
| 2008 | 11 | 19 |
| 2009 | 14 | 10 |
| 2010 | 5 | 13 |
| 2011 | 10 | 17 |
| 2012 | 11 | 14 |
| 2013 | 11 | 17 |
| 2014 | 10 | 12 |
| 2015 | 19 | 33 |
| 2016 | 19 | 20 |
| 2017 | 19 | 19 |
| 2018 | 19 | 36 |
| 2019 | 21 | 26 |
| 2020 | 29 | 31 |
| 2021 | 18 | 23 |
| 2022 | 20 | 12 |
| 2023 | 21 | 21 |
| 2024 | 18 | 28 |
| 2025 | 16 | 14 |
| 2026 | 8 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flattening device6 Oct 2026US 12,752,328 B2Contemporary Amperex Technology (Hong Kong) Limited
- Drawing and straightening unit for metal products, and corresponding method1 Sep 2026US 12,722,193 B2M. E. P. Macchine Elettroniche Piegatrici SpA
- Digital roll gap verification tool and related calibration stand30 Jun 2026US 12,667,878 B2Cleveland-Cliffs Steel Properties Inc.
- Side rail repair tool16 Jun 2026US 12,654,214 B2
- Systems and methods for deformation correction of a gas turbine shroud26 May 2026US 12,636,694 B2GE Vernova Infrastructure Technology LLC
- Aluminum alloy plate and method for producing same6 Aug 2026US 2026/0225140 A1Uacj Corporation
- Paintless Dent Removal Tool, System and Method6 Aug 2026US 2026/0225141 A1Ehc Inc.
- Hot Straightening Device for the Hot Straightening of a Component and Hot Straightening Process30 Jul 2026US 2026/0216775 A1Core 12 GmbH
- Glue Tab and a Tool/Tool Adaptor for Use with a Glue Tab25 Jun 2026US 2026/0175278 A1
- Tension Reduction Paintless Dent Removal System, Tool, and Method21 May 2026US 2026/0138171 A1Ehc Inc.
Most cited
By later US patents
- Expander tool124US 3,986,383 A1976
- Resilient wedge for core expander tool52US 4,888,975 A1989
- Can bottom reprofiler48US 5,467,628 ABelvac Production Machinery, Inc. · 1995
- Nestable container and method of making44US 5,160,031 ABerwick Manufacturing, Inc. · 1992
- Container reconfiguring system43US 5,040,682 ABerwick Container Corp. · 1991