B21B 1/085
Rail sections
B21B1/085 (Rail sections) appears on 59 US grants and 46 published applications in this corpus.
Search patents in B21B- Granted patents
- 59
- Published applications
- 46
- Assignees
- 34
- Inventors
- 133
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 3 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 1 | 4 |
| 2011 | 2 | 1 |
| 2012 | 3 | 4 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 4 | 2 |
| 2016 | 2 | 3 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 4 |
| 2020 | 2 | 2 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 4 |
| 2024 | 2 | 2 |
| 2025 | 4 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Forging press for hot forging of asymmetric to symmetric rail and process of forging thereof26 May 2026US RE50,897 E1Savita Nowar
- Moderate-strength steel rail and production method thereof2 Dec 2025US 12,486,549 B2Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd.
- Metal material processing machine29 Jul 2025US 12,370,587 B2
- Method for manufacturing a rail and corresponding rail22 Jul 2025US 12,365,957 B2ArcelorMittal
- Rail and method of manufacturing rail1 Apr 2025US 12,264,373 B2Nippon Steel Corporation
- Method for manufacturing a rail and corresponding rail2 Oct 2025US 2025/0305078 A1ArcelorMittal
- Method and apparatus for manufacturing an elevator guide rail11 Sep 2025US 2025/0281968 A1Vol-Stahl GmbH
- Cast-in soffit connection rail3 Oct 2024US 2024/0328575 A1
- Moderate-strength steel rail and production method thereof29 Feb 2024US 2024/0068063 A1Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd.
- A generating device based on friction drive for gear involute artifact with long-rolled path length by rolling method24 Aug 2023US 2023/0264244 A1Dalian University of Technology
Most cited
By later US patents
- Apparatus for the production of improved railway rails by accelerated cooling in line with the production rolling mill13US 4,611,789 AThe Algoma Steel Corporation, Limited · 1986
- Method and apparatus for measuring surface flatness of material12US 4,048,849 ANippon Kokan Kabushiki Kaisha · 1977
- Apparatus for transversely conveying profiled rods and rails10US 4,308,945 ASchloemann-Siemag Aktiengesellschaft · 1982
- Rolling mill rolls10US 4,370,877 ASacilor Acieries et Laminoirs de Lorraine · 1983
- Unitary one quarter mile long railroad rail free of weld seams8US 5,018,666 ACF&I Steel, L.P. · 1991