B21D 7/085
By passing through a curved die
Official title: {by passing through a curved die}
B21D7/085 (By passing through a curved die) appears on 22 US grants and 19 published applications in this corpus.
Search patents in B21D- Granted patents
- 22
- Published applications
- 19
- Assignees
- 20
- Inventors
- 57
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 2 | 3 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 3 | 3 |
| 2022 | 3 | 2 |
| 2023 | 2 | 0 |
| 2024 | 0 | 3 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Portable electric power tool for bending elongate objects16 Jun 2026US 12,654,215 B2Black & Decker Inc.
- Method for precision forming by continuous free bending27 May 2025US 12,311,424 B2Nanjing University of Aeronautics and Astronautics
- Ultra-low temperature forming method for ultra-thin curved part of high-strength aluminum alloy7 Feb 2023US 11,571,731 B2Dalian University of Technology
- Bending device31 Jan 2023US 11,565,298 B2Numalliance
- Tube bending machines with alignment systems20 Dec 2022US 11,529,663 B1Rogue Fabrication, LLC
- Portable electric power tool for bending elongate objects23 Oct 2025US 2025/0326019 A1
- Portable electric power tool for bending elongate objects7 Nov 2024US 2024/0367211 A1
- Portable electric power tool for bending elongate objects7 Nov 2024US 2024/0367212 A1Black & Decker Inc.
- Device and method for the cold-forming profiling of workpieces8 Aug 2024US 2024/0261840 A1Ernst Grob AG
- Method for precision forming by continuous free bending1 Dec 2022US 2022/0379362 A1Nanjing University of Aeronautics and Astronautics
Most cited
By later US patents
- Bending apparatus8US 4,665,731 ASinsei Mfg. Co., Ltd. · 1987
- Tube forming process7US 4,157,654 AThe Babcock & Wilcox Company · 1979
- Method and apparatus for manufacturing curved pipe7US 4,759,206 AKabushiki Kaisha Asahi Kinzoku Kogyosho · 1988
- Penetration bending method and penetration bending machine therefor7US 5,111,675 ANissin Seiki Kabushiki Kaisha · 1992
- Plastic pipe bender7US 5,125,825 A1992