B21B 19/16
Rolling tubes without additional rollers arranged inside the tubes
B21B19/16 (Rolling tubes without additional rollers arranged inside the tubes) appears on 7 US grants and 3 published applications in this corpus.
Search patents in B21B- Granted patents
- 7
- Published applications
- 3
- Assignees
- 3
- Inventors
- 21
- Latest grant
- 17 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Large-scale axle intelligent cross wedge rolling mill for rail transit17 Jun 2025US 12,330,197 B2Taiyuan University of Science and Technology
- Method and apparatus for manufacturing tubes by rolling26 Jul 2005US 6,920,773 B2Outokumpu Oyj
- Method and apparatus for manufacturing tubes17 May 2005US 6,892,559 B2Outokumpu Oyj
- Machine for simultaneously forming threads or fins on multiple cylindrical workpieces29 Jun 1999US 5,916,318 A
- Process for the rolling of hallow ingots on a assel rolling mill1 Jul 1997US 5,642,638 AMannesmann Aktiengesellschaft
- Large-scale axle intelligent cross wedge rolling mill for rail transit5 May 2022US 2022/0136558 A1Taiyuan University of Science and Technology
- Method and apparatus for manufacturing tubes by rolling26 Feb 2004US 2004/0035165 A1Outokumpu Oyj
- Method and apparatus for manufacturing tubes15 Jan 2004US 2004/0007033 A1Outokumpu Oyj
Most cited
By later US patents
- Method and apparatus to reduce the outer diameter and wall thickness of a hollow tube blank by rolling8US 5,125,251 AMannesmann Aktiengesellschaft · 1992
- Method and apparatus for manufacturing tubes5US 6,892,559 B2Outokumpu Oyj · 2005
- Method and apparatus for manufacturing tubes by rolling4US 6,920,773 B2Outokumpu Oyj · 2005
- Process for the rolling of hallow ingots on a assel rolling mill2US 5,642,638 AMannesmann Aktiengesellschaft · 1997
- Machine for simultaneously forming threads or fins on multiple cylindrical workpieces1US 5,916,318 A1999