B61L 27/30
Trackside multiple control systems
Official title: Trackside multiple control systems, e.g. switch-over between different systems
B61L27/30 (Trackside multiple control systems) appears on 99 US grants and 136 published applications in this corpus.
Search patents in B61L- Granted patents
- 99
- Published applications
- 136
- Assignees
- 62
- Inventors
- 316
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 3 | 2 |
| 2013 | 0 | 2 |
| 2014 | 3 | 9 |
| 2015 | 5 | 6 |
| 2016 | 6 | 5 |
| 2017 | 3 | 2 |
| 2018 | 2 | 9 |
| 2019 | 9 | 19 |
| 2020 | 8 | 4 |
| 2021 | 6 | 14 |
| 2022 | 5 | 10 |
| 2023 | 5 | 14 |
| 2024 | 12 | 15 |
| 2025 | 20 | 9 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for independent checking and healing of positive train control systems25 Aug 2026US 12,715,489 B2BNSF Railway Company
- System and method for virtual block stick circuits7 Jul 2026US 12,673,707 B2BNSF Railway Company
- Train-ground interlocking method and system for rail transit train operation control19 May 2026US 12,630,203 B2Casco Signal Ltd.
- Rail transit signal system with multi-network integration10 Mar 2026US 12,570,340 B2Casco Signal Ltd.
- Solid state switch, in particular for railway equipment17 Feb 2026US 12,556,178 B2KB Signaling Inc.
- System and method for interactive operation of real train and simulation train23 Jul 2026US 2026/0208776 A1Casco Signal Ltd.
- Systems and methods for independent checking and healing of positive train control systems9 Jul 2026US 2026/0192833 A1BNSF Railway Company
- Wireless vehicle management system2 Jul 2026US 2026/0184355 A1Arup Ventures Limited
- Cbtc system based on interval protection and heterogeneous redundancy, and implementation method thereof7 May 2026US 2026/0125089 A1Casco Signal Ltd.
- Methods and systems for railcar content analysis and allocation management9 Apr 2026US 2026/0097796 A1CSX Transportation, Inc.
Most cited
By later US patents
- Transit vehicle handback control apparatus and method22US 4,327,415 AWestinghouse Electric Corp. · 1982
- Data transmission system, and method of transmitting data from a central station to a track-bound vehicle10US 7,433,766 B2Siemens Aktiengesellschaft · 2008
- Control system for vehicle in a guideway network8US 9,128,815 B2Thales Canada Inc. · 2015
- Transfer of vehicle control system and method7US 10,279,825 B2General Electric Company · 2019
- Ground device for train control system7US 8,998,149 B2The Nippon Signal Co., Ltd. · 2015