B21D 3/12
Straightening or restoring form of metal rods, metal tubes, metal profiles, or
Official title: by stretching with or without twisting (by twisting only B21D11/14)
B21D3/12 (Straightening or restoring form of metal rods, metal tubes, metal profiles, or) appears on 24 US grants and 16 published applications in this corpus.
Search patents in B21D- Granted patents
- 24
- Published applications
- 16
- Assignees
- 22
- Inventors
- 50
- Latest grant
- 8 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 2 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 3 |
| 2022 | 0 | 0 |
| 2023 | 2 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Stretching machine for extruded profiles8 Oct 2024US 12,109,602 B2Danieli & C. Officine Meccaniche SpA
- Method for straightening of a FeCrAl alloy tube15 Aug 2023US 11,724,299 B2Sandvik Intellectual Property AB
- Transport system for a wire or a sheet and method for delivering a wire or a sheet3 Jan 2023US 11,541,441 B2Sandvik Materials Technology Deutschland GmbH
- Method and device for straightening a workpiece27 Jul 2021US 11,072,010 B2MOST Technik GmbH
- Apparatus and method for manufacturing blade27 Nov 2018US 10,137,487 B2Korea Institute of Machinery & Materials
- Transport system for a pipe and method for delivering a pipe19 Mar 2026US 2026/0077413 A1Alleima GmbH
- Restraint device for vehicular frame straightening systems20 May 2021US 2021/0146421 A1
- Transport system for a wire or a sheet and method for delivering a wire or a sheet21 Jan 2021US 2021/0016336 A1Sandvik Materials Technology Deutschland GmbH
- Transport system for a pipe and method for delivering a pipe21 Jan 2021US 2021/0016990 A1Sandvik Materials Technology Deutschland GmbH
- Stretching machine for extruded profiles17 Dec 2020US 2020/0391268 A1Danieli & C. Officine Meccaniche SpA
Most cited
By later US patents
- Method of straightening wire rods of titanium and titanium alloy64US 6,077,369 ANippon Steel Corporation · 2000
- Hot stretch straightening of high strength α/β processed titanium29US 8,499,605 B2ATI Properties, Inc. · 2013
- Hot stretch straightening of high strength age hardened metallic form and straightened age hardened metallic form16US 8,834,653 B2ATI Properties, Inc. · 2014
- Stretch shaping method and apparatus10US 4,970,886 AAluminum Company of America · 1990
- Stretching machine8US 4,141,679 AUbe Industries, Ltd. · 1979