E01B 31/12
Removing metal from rails, rail joints, or baseplates
Official title: Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
E01B31/12 (Removing metal from rails, rail joints, or baseplates) appears on 144 US grants and 85 published applications in this corpus.
Search patents in E01B- Granted patents
- 144
- Published applications
- 85
- Assignees
- 64
- Inventors
- 184
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 8 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 8 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 5 |
| 2003 | 3 | 3 |
| 2004 | 4 | 1 |
| 2005 | 2 | 0 |
| 2006 | 1 | 1 |
| 2007 | 2 | 2 |
| 2008 | 3 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 4 |
| 2014 | 0 | 1 |
| 2015 | 2 | 6 |
| 2016 | 2 | 3 |
| 2017 | 6 | 8 |
| 2018 | 4 | 4 |
| 2019 | 5 | 4 |
| 2020 | 3 | 8 |
| 2021 | 3 | 9 |
| 2022 | 4 | 4 |
| 2023 | 2 | 2 |
| 2024 | 3 | 12 |
| 2025 | 3 | 3 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Road-rail dual purpose quick disassembly and assembly type rail grinding maintenance robot29 Sep 2026US 12,746,634 B2Beijing Jiaotong University
- On-track maintenance machine and method for operating the machine8 Sep 2026US 12,729,489 B2Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- Method for reprofiling at least one switch blade in points laid in a railway track26 May 2026US 12,637,813 B2MATE GmbH
- Rail head abraser21 Apr 2026US 12,606,223 B2
- Rail milling vehicle30 Sep 2025US 12,427,579 B2Harsco Technologies LLC
- Grinding simulation test device and method for steel turnout rail of rail transit18 Jun 2026US 2026/0168908 A1China Academy of Machinery Wuhan Research Institute of Materials Protection Co. Ltd.
- Rail grinding machine and method for grinding a rail of a track16 Apr 2026US 2026/0102868 A1Robel Bahnbaumaschinen GmbH
- Rail grinding machine and method thereof18 Sep 2025US 2025/0290254 A1Sperling Railway Services, Inc.
- Rail grinding machine and method thereof18 Sep 2025US 2025/0290255 A1Sperling Railway Services, Inc.
- Method and rail vehicle for carrying out work on a railway track16 Jan 2025US 2025/0019908 A1Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
Most cited
By later US patents
- Grinding device for the reprofiling of a rail of a railway track31US 4,492,059 ASpeno International S. A. · 1985
- Process and apparatus for on-track truing of the heads of rails of a railway25US 4,115,857 ASpeno International S. A. · 1978
- Rail grinding system22US 4,178,724 AHarsco Corporation · 1979
- Mobile rail welding machine22US 4,272,664 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1981
- Method of programming and performing the reprofiling of rails of a railroad track and railroad vehicle for carrying out the same22US 5,134,808 ASpeno International S. A. · 1992