B61L 1/02
Electric devices associated with track
Official title: Electric devices associated with track {, e.g. rail contacts}
B61L1/02 (Electric devices associated with track) appears on 130 US grants and 126 published applications in this corpus.
Search patents in B61L- Granted patents
- 130
- Published applications
- 126
- Assignees
- 102
- Inventors
- 342
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 2 | 3 |
| 2006 | 1 | 2 |
| 2007 | 4 | 4 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 3 | 1 |
| 2011 | 1 | 2 |
| 2012 | 2 | 4 |
| 2013 | 1 | 2 |
| 2014 | 1 | 2 |
| 2015 | 4 | 5 |
| 2016 | 1 | 6 |
| 2017 | 3 | 3 |
| 2018 | 1 | 8 |
| 2019 | 8 | 14 |
| 2020 | 11 | 16 |
| 2021 | 9 | 10 |
| 2022 | 9 | 11 |
| 2023 | 8 | 12 |
| 2024 | 14 | 12 |
| 2025 | 7 | 5 |
| 2026 | 8 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for mover self-navigation in an independent cart system7 Jul 2026US 12,673,704 B2Rockwell Automation Technologies, Inc.
- Monitoring device for a buffer stop26 May 2026US 12,637,122 B2Amx Automation Technologies GmbH
- Transportation operation fault detection5 May 2026US 12,617,439 B2International Electronic Machines Corp.
- Method for monitoring a railway track and monitoring system for monitoring a railway track14 Apr 2026US 12,600,389 B2Sensonic GmbH
- Rail contact element and drop off detection unit17 Feb 2026US 12,552,424 B2Thales Management & Services Deutschland GmbH
- Alert device23 Jul 2026US 2026/0212748 A1
- Railcar acoustic monitoring system and method of use29 May 2025US 2025/0171063 A1voestalpine SIGNALING USA Inc.
- Gap blocking systems and methods for amusement park attractions8 May 2025US 2025/0145185 A1Universal City Studios LLC
- A system and method for monitoring a railway network17 Apr 2025US 2025/0121865 A1Konux GmbH
- Gap blocking systems and methods for amusement park attractions27 Mar 2025US 2025/0100589 A1Universal City Studios LLC
Most cited
By later US patents
- Railway structure hazard predictor50US 5,529,267 AUnion Switch & Signal Inc. · 1996
- Method and apparatus for detecting railway activity38US 5,713,540 AAT&T Corp. · 1998
- Method and apparatus for detecting radioactive contamination in steel scrap37US 5,705,818 ABethlehem Steel Corporation · 1998
- System for detecting trains36US 5,462,244 AN.V. Nederlandse Spoorwegen · 1995
- Rail and train monitoring system and method36US 6,951,132 B2General Electric Company · 2005