B21C 37/296
Making branched pieces starting from strip material
Official title: {Making branched pieces starting from strip material; Making branched tubes by securing a secondary tube in an opening in the undeformed wall of a principal tube}
B21C37/296 (Making branched pieces starting from strip material) appears on 21 US grants and 14 published applications in this corpus.
Search patents in B21C- Granted patents
- 21
- Published applications
- 14
- Assignees
- 20
- Inventors
- 52
- Latest grant
- 14 Aug 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
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| 1988 | 2 | 0 |
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| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
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| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 0 |
| 2004 | 1 | 1 |
| 2005 | 2 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Heat exchanger tube with concave-shaped end and method of manufacturing a heat exchanger tube with concave-shaped end14 Aug 2018US 10,048,009 B2Enterex America LLC
- Node structures for lattice frames19 Sep 2017US 9,765,547 B2MHI Vestas Offshore Wind A/S
- Method for producing a hollow profiled section1 Mar 2016US 9,272,318 B2ThyssenKrupp Steel Europe AG
- Assembly for fitting together exhaust pipes in multi-cylinder engine8 Jun 2010US 7,731,241 B2Yutaka Giken Co., Ltd.
- Method and device for production of a hollow section18 Mar 2008US 7,343,678 B2Daimler AG
- Stainless-steel Tee-pipe Moulding Process24 Mar 2022US 2022/0088660 A1Zhejiang Delifu Technology Co., Ltd.
- Heat exchanger tube with concave-shaped end and method of manufacturing a heat exchanger tube with concave-shaped end22 Oct 2015US 2015/0300742 A1Enterex America LLC
- Node structures for lattice frames4 Jun 2015US 2015/0152664 A1Vestas Wind Systems A/S
- Method for Producing a Hollow Profiled Section2 May 2013US 2013/0104368 A1ThyssenKrupp Steel Europe AG
- Hollow tine for aerating turf and manufacture method thereof30 Aug 2012US 2012/0217029 A1Shenzhen (China) KM Industrial Co., Ltd.
Most cited
By later US patents
- Assembly for fitting together exhaust pipes in multi-cylinder engine23US 7,731,241 B2Yutaka Giken Co., Ltd. · 2010
- Gutter outlet tube, stamping dies and method14US 6,523,575 B1M&B Manufacturing, Inc. · 2003
- T-joint method and product12US 4,370,790 AEverest & Jennings, Inc. · 1983
- Thin walled compartmented tubular structure and its manufacturing process12US 6,929,035 B2Sonaca S.A. · 2005
- Method and apparatus for making t-tube fittings11US 4,741,081 ATube Fab of Afton Corporation · 1988