E01B 31/02
Working rail or other metal track components on the spot
E01B31/02 (Working rail or other metal track components on the spot) appears on 239 US grants and 161 published applications in this corpus.
Search patents in E01B- Granted patents
- 239
- Published applications
- 161
- Assignees
- 127
- Inventors
- 358
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 9 | 0 |
| 1987 | 2 | 0 |
| 1988 | 8 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 12 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 2 | 6 |
| 2003 | 3 | 3 |
| 2004 | 4 | 1 |
| 2005 | 2 | 1 |
| 2006 | 3 | 4 |
| 2007 | 2 | 2 |
| 2008 | 3 | 2 |
| 2009 | 2 | 3 |
| 2010 | 2 | 0 |
| 2011 | 0 | 8 |
| 2012 | 0 | 3 |
| 2013 | 3 | 6 |
| 2014 | 1 | 6 |
| 2015 | 4 | 8 |
| 2016 | 8 | 5 |
| 2017 | 9 | 9 |
| 2018 | 4 | 9 |
| 2019 | 5 | 12 |
| 2020 | 9 | 13 |
| 2021 | 7 | 14 |
| 2022 | 6 | 8 |
| 2023 | 4 | 4 |
| 2024 | 8 | 20 |
| 2025 | 9 | 6 |
| 2026 | 6 | 8 |
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
- Systems and methods for performing maintenance of an amusement park attraction system10 Mar 2026US 12,571,165 B2Universal City Studios LLC
- Adhesion enhancement compositions6 Aug 2026US 2026/0226334 A1L B Foster Rail Technologies, Inc
- Cutting system for profiles30 Jul 2026US 2026/0218460 A1Geismar
- 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.
- 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.
- Energy supply device and power tool having such an energy supply device18 Jun 2026US 2026/0171531 A1Hilti Aktiengesellschaft
Most cited
By later US patents
- Self-propelled rail heater car with movable induction heating coils82US 5,299,504 ATechnical Rail Products, Incorporated · 1994
- Fully automatic, multiple operation rail maintenance apparatus48US 5,671,679 ANordco Inc. · 1997
- 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
- Portable rail cutting apparatus23US 7,131,897 B2The Stanley Works · 2006