B21B 2045/0221
For structural sections
Official title: {for structural sections, e.g. H-beams}
B21B2045/0221 (For structural sections) appears on 16 US grants and 9 published applications in this corpus.
Search patents in B21B- Granted patents
- 16
- Published applications
- 9
- Assignees
- 9
- Inventors
- 39
- Latest grant
- 15 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Steel section rolling mill15 Aug 2023US 11,724,295 B2ArcelorMittal
- Rail manufacturing method and manufacturing equipment18 Feb 2020US 10,563,278 B2Jfe Steel Corporation
- Rail manufacturing method and manufacturing equipment26 Feb 2019US 10,214,795 B2Jfe Steel Corporation
- System for thermal treatment of rails10 Oct 2017US 9,783,864 B2Primetals Technologies Italy S.R.L.
- Process and related plant for manufacturing steel long products without interruption28 Jun 2011US 7,967,056 B2
- Method of producing steel material, apparatus that cools steel material, and steel material14 Apr 2022US 2022/0112571 A1Jfe Steel Corporation
- Steel section rolling mill17 Dec 2020US 2020/0391264 A1ArcelorMittal
- Steel material cooling device and cooling method3 Dec 2020US 2020/0377967 A1Nippon Steel Corporation
- Rail manufacturing method and manufacturing equipment11 Apr 2019US 2019/0106762 A1Jfe Steel Corporation
- Method of producing steel material, apparatus that cools steel material, and steel material15 Nov 2018US 2018/0327880 A1Jfe Steel Corporation
Most cited
By later US patents
- Spray unit for cooling extruded sections13US 5,382,306 AAlusuisse-Lonza Services Ltd. · 1995
- Apparatus for cooling metal sections9US 4,120,455 ACentre de Recherches Metallurgiques-Centrum voor Research in de Metallurgie · 1978
- Unitary one quarter mile long railroad rail free of weld seams8US 5,018,666 ACF&I Steel, L.P. · 1991
- Method of and arrangement for cooling of hot rolled sections in particular rails7US 5,440,889 ASMS Schloemann-Siemag Aktiengesellschaft · 1995
- Continuous rail production6US 5,195,573 ACF&I Steel, L.P. · 1993