B21D 9/12
Bending tubes using mandrels or the like: by pushing over a curved
Official title: by pushing over a curved mandrel; by pushing through a curved die
B21D9/12 (Bending tubes using mandrels or the like: by pushing over a curved) appears on 30 US grants and 16 published applications in this corpus.
Search patents in B21D- Granted patents
- 30
- Published applications
- 16
- Assignees
- 32
- Inventors
- 73
- Latest grant
- 1 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
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| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
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| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 2 |
| 2018 | 2 | 2 |
| 2019 | 1 | 2 |
| 2020 | 2 | 0 |
| 2021 | 3 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 3 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Push-bending forming device and method for titanium alloy tubes1 Apr 2025US 12,263,519 B2Nanchang Hangkong University
- Bending tools and methods of use thereof12 Nov 2024US 12,138,679 B2Smith & Nephew Asia Pacific Pte. Limited
- Bender24 Oct 2023US 11,794,233 B1
- Differential temperature push bending method and device for tube with small bending radius30 Nov 2021US 11,185,904 B2Nanchang Hangkong University (NCHU)
- Tube bender16 Nov 2021US 11,173,532 B2Lih Yann Industrial Co., Ltd.
- Processing apparatus of trunk lid hinge arm, processing method of trunk lid hinge arm, and trunk lid hinge arm25 Dec 2025US 2025/0387824 A1Hyundai Motor Company
- Bending fixture10 Apr 2025US 2025/0114835 A1Ultra Clean Holdings, Inc.
- Hollow shell part manufacturing method30 Jan 2025US 2025/0033105 A1Nippon Steel Corporation
- Push-bending forming device and method for titanium alloy tubes5 Dec 2024US 2024/0399436 A1Nanchang Hangkong University
- Bending tools and methods of use thereof26 May 2022US 2022/0161306 A1Smith & Nephew, Inc.
Most cited
By later US patents
- Adjustable cutoff apparatus31US 5,305,625 AShape Corp. · 1994
- Process and apparatus for manufacturing tube bends19US 4,841,760 A1989
- Method of manufacturing a branched pipe by internal high-pressure forming18US 5,697,155 AMercedes-Benz AG · 1997
- Lever bender and related method of use6US 9,156,075 B2Irwin Industrial Tool Company · 2015
- Exterior mandrel for multiaxis bender5US 5,272,905 AGeneral Motors Corporation · 1993