B21C 45/00
Separating mandrels from work or vice versa
B21C45/00 (Separating mandrels from work or vice versa) appears on 17 US grants and 8 published applications in this corpus.
Search patents in B21C- Granted patents
- 17
- Published applications
- 8
- Assignees
- 15
- Inventors
- 45
- Latest grant
- 15 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Device and method for handling mandrel rods in a tube rolling mill15 Apr 2025US 12,275,047 B2SMS group GmbH
- Method and apparatus for making seamless pipe28 Apr 2020US 10,632,514 B2SMS group GmbH
- Mandrel conveying device for a tube rolling mill21 Aug 2018US 10,052,669 B2Danieli & C. Officine Meccaniche SpA
- Mandrel conveying device for a tube rolling mill8 Dec 2015US 9,205,473 B2Danieli & C. Officine Meccaniche SpA
- Method of and rolling mill for making seamless steel pipe9 Dec 2014US 8,904,839 B2SMS Meer GmbH
- Device and method for handling mandrel rods in a tube rolling mill29 Jun 2023US 2023/0201900 A1SMS group GmbH
- Method and apparatus for making seamless pipe21 Jun 2018US 2018/0169725 A1SMS group GmbH
- Mandrel conveying device for a tube rolling mill3 Mar 2016US 2016/0059284 A1Danieli & C. Officine Meccaniche SpA
- Mandrel conveying device for a tube rolling mill10 Jan 2013US 2013/0008219 A1Danieli & C. Officine Meccaniche SpA
- Rolling process and relating longitudinal, multi-stand rolling mill of continuous, restrained type for hollow bodies3 May 2012US 2012/0103049 A1Danieli & Officine Meccaniche SpA
Most cited
By later US patents
- Manufacture of metal tubes15US 6,799,357 B2Memry Corporation · 2004
- Process for the manufacture of metal tubes13US 5,709,021 AMemry Corporation · 1998
- Method of sizing and straightening extruded tubes8US 4,926,667 APrecision Extruded Products, Inc. · 1990
- Manufacture of seamless steel tube5US 4,375,160 AVallourec · 1983
- Embossing method3US 3,943,741 AThe United States of America as represented by the Secretary of the Army · 1976