B21B 25/04
Cooling or lubricating mandrels during operation
B21B25/04 (Cooling or lubricating mandrels during operation) appears on 41 US grants and 26 published applications in this corpus.
Search patents in B21B- Granted patents
- 41
- Published applications
- 26
- Assignees
- 17
- Inventors
- 83
- Latest grant
- 31 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 5 |
| 2010 | 1 | 3 |
| 2011 | 5 | 2 |
| 2012 | 3 | 1 |
| 2013 | 2 | 4 |
| 2014 | 2 | 1 |
| 2015 | 1 | 3 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 2 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Piercing machine, mandrel bar, and method for producing seamless metal pipe using the same31 May 2022US 11,344,935 B2Nippon Steel Corporation
- Method and apparatus for making seamless pipe28 Apr 2020US 10,632,514 B2SMS group GmbH
- Powder lubricant composition and method for manufacturing seamless steel pipe12 Mar 2019US 10,227,540 B2Nippon Steel & Sumitomo Metal Corporation
- Process for hot-rolling metallic hollow bodies and corresponding hot-rolling mill1 Jan 2019US 10,166,583 B2SMS group GmbH
- Rolling mill and rolling method17 Oct 2017US 9,789,522 B2SMS group GmbH
- Piercing machine, mandrel bar, and method for producing seamless metal pipe using the same17 Jun 2021US 2021/0178442 A1Nippon Steel Corporation
- Method and apparatus for making seamless pipe21 Jun 2018US 2018/0169725 A1SMS group GmbH
- Powder lubricant composition and method for manufacturing seamless steel pipe9 Jul 2015US 2015/0191670 A1Nippon Steel & Sumitomo Metal Corporation
- Tool for piercing mill25 Jun 2015US 2015/0176107 A1Jfe Steel Corporation
- Method for producing a plug for hot tube-making7 May 2015US 2015/0125630 A1Nippon Steel & Sumitomo Metal Corporation
Most cited
By later US patents
- Separating-and-lubricating agent in solid form39US 4,575,430 ALonza Ltd. · 1986
- Methods and apparatus for manufacturing seamless tube14US 4,928,507 AKocks Technik GmbH & Co. · 1990
- Method for manufacturing seamless pipe13US 5,778,714 ANKK Corporation · 1998
- Thermal controlled mandrel with replaceable tip for copper and brass extrusion11US 5,687,604 AExco Technologies Limited · 1997
- Method permitting the increase of operations of cold pilger mills and an apparatus for the embodiment of this method10US 4,658,617 AVallourec · 1987