B21C 37/14
Making tubes from doubled flat material
B21C37/14 (Making tubes from doubled flat material) appears on 30 US grants and 27 published applications in this corpus.
Search patents in B21C- Granted patents
- 30
- Published applications
- 27
- Assignees
- 30
- Inventors
- 102
- Latest grant
- 24 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 4 |
| 2009 | 0 | 4 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 1 | 6 |
| 2014 | 3 | 1 |
| 2015 | 1 | 2 |
| 2016 | 0 | 0 |
| 2017 | 2 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Overlapping and progressive forming method for high-performance multi-element NiAl-based alloy tubular part24 Dec 2024US 12,172,203 B2Dalian University of Technology
- Clad welded pipe or tube and method of producing same1 Nov 2022US 11,484,927 B2Jfe Steel Corporation
- Bracket-integrated double-layer door impact beam, apparatus and method for manufacturing the same31 Mar 2020US 10,603,991 B2Hyundai Motor Company
- Solderable fluid channel for a heat exchanger of aluminum5 Mar 2019US 10,222,145 B2Mahle International GmbH
- Method for manufacturing refrigerant guide tube of heat exchanger, refrigerant guide tube manufactured using the method and heat exchanger with the refrigerant guide tube6 Feb 2018US 9,885,521 B2Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd.
- In-situ solar tracker manufacturing22 May 2025US 2025/0164154 A1
- Overlapping and progressive forming method for high-performance multi-element nial-based alloy tubular part15 Jun 2023US 2023/0182188 A1Dalian University of Technology
- Clad welded pipe or tube and method of producing same20 Jun 2019US 2019/0184437 A1Jfe Steel Corporation
- Bracket-integrated double-layer door impact beam, apparatus and method for manufacturing the same14 Jun 2018US 2018/0162205 A1Hyundai Motor Company
- Method of manufacturing curvilineal closed structure parts without flange and apparatus for the same19 Mar 2015US 2015/0076215 A1Jfe Steel Corporation
Most cited
By later US patents
- Method of manufacturing a tube for a heat exchanger46US 5,185,925 AGeneral Motors Corporation · 1993
- Metal tube having internal passages therein27US 3,991,822 AOlin Corporation · 1976
- Heat exchanger having heat-exchanging core portion divided into plural core portions26US 6,341,648 B12002
- Method of making a high pressure condenser18US 5,271,151 A1993
- Method of manufacturing an aluminum heat exchanger17US 5,295,302 ACalsonic Corporation · 1994