B23K 2101/26
Railway- or like rails
B23K2101/26 (Railway- or like rails) appears on 147 US grants and 131 published applications in this corpus.
Search patents in B23K- Granted patents
- 147
- Published applications
- 131
- Assignees
- 84
- Inventors
- 262
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 1 |
| 2002 | 3 | 8 |
| 2003 | 6 | 6 |
| 2004 | 7 | 3 |
| 2005 | 4 | 6 |
| 2006 | 3 | 6 |
| 2007 | 2 | 2 |
| 2008 | 2 | 3 |
| 2009 | 2 | 3 |
| 2010 | 3 | 7 |
| 2011 | 4 | 3 |
| 2012 | 3 | 5 |
| 2013 | 4 | 11 |
| 2014 | 6 | 6 |
| 2015 | 5 | 5 |
| 2016 | 6 | 4 |
| 2017 | 4 | 6 |
| 2018 | 4 | 7 |
| 2019 | 3 | 10 |
| 2020 | 6 | 3 |
| 2021 | 2 | 5 |
| 2022 | 6 | 3 |
| 2023 | 2 | 3 |
| 2024 | 4 | 6 |
| 2025 | 6 | 3 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Welded rail29 Sep 2026US 12,747,483 B2Nippon Steel Corporation
- Welded rail9 Jun 2026US 12,649,964 B2Nippon Steel Corporation
- Automated geometry and crowning apparatus for use of mobile electric flash-butt welding of railroad rails and rail inserts11 Nov 2025US 12,466,008 B2One Rail Group, LLC
- Burning apparatus for railway repair15 Jul 2025US 12,358,072 B2Goldschmidt Holding GmbH
- Rail welding method and device20 May 2025US 12,304,011 B2Dezhou University
- Manufacturing method of flash butt welded rail1 Oct 2026US 2026/0295710 A1Nippon Steel Corporation
- Zero Emission Railroad Tracks Welder17 Sep 2026US 2026/0273646 A1
- Method and device for welding components, which can be travelled upon, of a track by flash butt welding23 Jul 2026US 2026/0208283 A1Voestalpine Railway Systems GmbH
- Method for increasing hardened layer thickness of a rail head of a flash welded joint of a steel rail and a steel rail16 Jul 2026US 2026/0200019 A1Chengdu Advanced Metal Materials Industry Technology Research Institute Co., Ltd.
- A welding and heat treatment method for a steel rail with deep hardened layer and a steel rail25 Jun 2026US 2026/0176712 A1Chengdu Advanced Metal Materials
Most cited
By later US patents
- Method and system for welding railroad rails64US 6,278,074 B1Lincoln Global.Inc. · 2001
- Manufacturing method of a structural body41US 6,273,323 B1Hitachi, Ltd. · 2001
- Friction stir welding method38US 6,315,187 B1Hitachi, Ltd. · 2001
- Method of railroad rail repair26US 6,515,249 B1Harsco Technologies LLC · 2003
- Method of welding continuous rails and apparatus therefor25US 4,414,454 AH. A. Schlatter AG · 1983