B21D 9/18
For heating or cooling of bends
Official title: for heating or cooling of bends
B21D9/18 (For heating or cooling of bends) appears on 11 US grants and 9 published applications in this corpus.
Search patents in B21D- Granted patents
- 11
- Published applications
- 9
- Assignees
- 12
- Inventors
- 29
- Latest grant
- 1 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 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 | 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 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 3 |
| 2020 | 0 | 0 |
| 2021 | 2 | 1 |
| 2022 | 2 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Push-bending forming device and method for titanium alloy tubes1 Apr 2025US 12,263,519 B2Nanchang Hangkong University
- 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
- Pipe bending for reel-lay operations5 Jul 2022US 11,376,644 B2Acergy France SAS
- Differential temperature push bending method and device for tube with small bending radius30 Nov 2021US 11,185,904 B2Nanchang Hangkong University (NCHU)
- Method for producing pipe material9 Nov 2021US 11,167,335 B2Mitsubishi Heavy Industries, Ltd.
- 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
- Apparatus and method for forming large-scale thin-walled ring shell by hot-press bending with internal gas pressure25 Nov 2021US 2021/0362209 A1Dalian University of Technology
- Differential temperature push bending method and device for tube with small bending radius25 Jul 2019US 2019/0224736 A1Nanchang Hangkong University (NCHU)
- Pipe Bending for Reel-Lay Operations6 Jun 2019US 2019/0168275 A1Acergy France SAS
Most cited
By later US patents
- Method and apparatus for continuous bending of elongated materials37US 4,061,005 ADaiichi Koshuha Kogyo Kabushiki Kaisha · 1977
- Bow control for metallic structures3US 4,548,657 AGeneral Electric Company · 1985
- Pipe bending for reel-lay operations2US 10,201,842 B2Acergy France SAS · 2019
- Method for producing pipe material1US 11,167,335 B2Mitsubishi Heavy Industries, Ltd. · 2021