B21D 9/16
Auxiliary equipment
Official title: Auxiliary equipment, e.g. machines for filling tubes with sand
B21D9/16 (Auxiliary equipment) appears on 23 US grants and 17 published applications in this corpus.
Search patents in B21D- Granted patents
- 23
- Published applications
- 17
- Assignees
- 24
- Inventors
- 60
- Latest grant
- 1 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 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 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 1 | 3 |
| 2020 | 0 | 2 |
| 2021 | 2 | 1 |
| 2022 | 5 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Push-bending forming device and method for titanium alloy tubes1 Apr 2025US 12,263,519 B2Nanchang Hangkong University
- Tube bending systems25 Oct 2022US 11,478,838 B2Rogue Fabrication, LLC
- Tube bending mandrel and system using the same13 Sep 2022US 11,440,072 B2Carrier Corporation
- Machine for the working of tubes provided with a device for detecting any slippage of the tube being worked23 Aug 2022US 11,420,245 B2Blm S.P.A.
- Apparatus and method for forming large-scale thin-walled ring shell by hot-press bending with internal gas pressure16 Aug 2022US 11,413,672 B2Dalian University of Technology
- Guiding device and method for filling a double-wall pipe with a granular material for the bending thereof17 Sep 2026US 2026/0273604 A1Airbus Atlantic
- Mandrel assembly for a tube bending machine27 Nov 2025US 2025/0360548 A1Blm S.P.A.
- Bending fixture10 Apr 2025US 2025/0114835 A1Ultra Clean Holdings, Inc.
- Push-bending forming device and method for titanium alloy tubes5 Dec 2024US 2024/0399436 A1Nanchang Hangkong University
- Tube bending systems26 May 2022US 2022/0161309 A1Rogue Fabrication, LLC
Most cited
By later US patents
- Method and apparatus for continuous bending of elongated materials37US 4,061,005 ADaiichi Koshuha Kogyo Kabushiki Kaisha · 1977
- Tube-bending machine13US 4,380,917 AHitachi, Ltd. · 1983
- Handling device for slipping tubes on the mandrel of bending machines8US 4,028,926 APrvni Brnenska strojirna, narodni podnik · 1977
- Bow control for metallic structures3US 4,548,657 AGeneral Electric Company · 1985
- Tube bending apparatus and method3US 5,406,821 AEagle Precision Technologies Inc. · 1995