B61L 3/00
Devices along the route for controlling devices on the vehicle or train
Official title: Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
B61L3/00 (Devices along the route for controlling devices on the vehicle or train) appears on 678 US grants and 593 published applications in this corpus.
Search patents in B61L- Granted patents
- 678
- Published applications
- 593
- Assignees
- 251
- Inventors
- 1,147
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 14 | 0 |
| 1978 | 8 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 9 | 0 |
| 1991 | 8 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 11 | 0 |
| 1996 | 8 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 1 |
| 2002 | 10 | 9 |
| 2003 | 11 | 22 |
| 2004 | 12 | 21 |
| 2005 | 11 | 22 |
| 2006 | 13 | 7 |
| 2007 | 15 | 7 |
| 2008 | 2 | 8 |
| 2009 | 5 | 10 |
| 2010 | 5 | 18 |
| 2011 | 5 | 17 |
| 2012 | 14 | 19 |
| 2013 | 20 | 19 |
| 2014 | 22 | 36 |
| 2015 | 25 | 41 |
| 2016 | 32 | 39 |
| 2017 | 47 | 33 |
| 2018 | 20 | 41 |
| 2019 | 38 | 50 |
| 2020 | 28 | 40 |
| 2021 | 32 | 35 |
| 2022 | 35 | 29 |
| 2023 | 20 | 27 |
| 2024 | 31 | 19 |
| 2025 | 27 | 15 |
| 2026 | 16 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods and systems for decentralized rail signaling and positive train control6 Oct 2026US 12,752,823 B2Metrom Rail, LLC
- Method and apparatus for a train control system8 Sep 2026US 12,728,901 B2
- System and method for virtual block stick circuits7 Jul 2026US 12,673,707 B2BNSF Railway Company
- System and method for identifying a compromised or damaged section of a conductive body extending along a route23 Jun 2026US 12,662,174 B2Transportation IP Holdings, LLC
- Railroad virtual track block system16 Jun 2026US 12,654,753 B2BNSF Railway Company
- Railroad virtual track block system8 Oct 2026US 2026/0307691 A1BNSF Railway Company
- Methods and systems for achieving vital ultra-wideband (uwb) based train control17 Sep 2026US 2026/0274312 A1Metrom Rail, LLC
- System and method for a virtual approach signal6 Aug 2026US 2026/0225629 A1BNSF Railway Company
- Wireless vehicle management system2 Jul 2026US 2026/0184355 A1Arup Ventures Limited
- System and method for virtual block operational status control with long block time delay30 Apr 2026US 2026/0116439 A1BNSF Railway Company
Most cited
By later US patents
- Automated wireless preventive maintenance monitoring system for magnetic levitation (MAGLEV) trains and other vehicles243US 5,445,347 AHughes Aircraft Company · 1995
- Communication system and method for a rail vehicle consist234US 8,825,239 B2General Electric Company · 2014
- Remote asset monitoring system172US 5,867,801 AGeneral Railway Signal Corporation · 1999
- Train location and control using spread spectrum radio communications153US 5,420,883 AHughes Aircraft Company · 1995
- Accurate position-sensing and communications for guideway operated vehicles141US 6,011,508 AMagneMotion, Inc. · 2000