B61L 15/00
Indicators provided on the vehicle or train for signalling purposes
B61L15/00 (Indicators provided on the vehicle or train for signalling purposes) appears on 1,976 US grants and 2,325 published applications in this corpus.
Search patents in B61L- Granted patents
- 1,976
- Published applications
- 2,325
- Assignees
- 537
- Inventors
- 3,703
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 7 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 10 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 18 | 0 |
| 2000 | 12 | 0 |
| 2001 | 7 | 3 |
| 2002 | 8 | 10 |
| 2003 | 16 | 17 |
| 2004 | 12 | 23 |
| 2005 | 19 | 21 |
| 2006 | 22 | 23 |
| 2007 | 11 | 24 |
| 2008 | 11 | 34 |
| 2009 | 6 | 25 |
| 2010 | 12 | 45 |
| 2011 | 12 | 44 |
| 2012 | 46 | 59 |
| 2013 | 46 | 74 |
| 2014 | 85 | 114 |
| 2015 | 98 | 100 |
| 2016 | 93 | 159 |
| 2017 | 123 | 139 |
| 2018 | 111 | 157 |
| 2019 | 130 | 186 |
| 2020 | 128 | 196 |
| 2021 | 138 | 208 |
| 2022 | 139 | 164 |
| 2023 | 121 | 157 |
| 2024 | 173 | 157 |
| 2025 | 168 | 125 |
| 2026 | 100 | 61 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B61L 15/0018Communication with or on the vehicle or train994
- B61L 15/0081On-board diagnosis or maintenance631
- B61L 15/0072On-board train data handling587
- B61L 15/0058On-board optimisation of vehicle or vehicle train operation381
- B61L 15/0062On-board target speed calculation or supervision291
- B61L 15/009On-board display devices221
- B61L 15/0054Train integrity supervision153
- B61L 15/0063Multiple on-board control systems109
All 13 subgroupsShow fewer
- B61L 15/0094Recorders on the vehicle61
- B61L 15/02Head or tail indicators32
- B61L 15/0092Memory means reproducing during the running of the vehicle or vehicle train26
- B61L 15/0045Destination indicators, identification panels or distinguishing signs on the vehicles17
- B61L 15/0009Wiring diagrams for start- or stop-signals on vehicles having one or more9
Recent patents
- Methods and systems for decentralized rail signaling and positive train control6 Oct 2026US 12,752,823 B2Metrom Rail, LLC
- Train preparation method and gateway for a train preparation method6 Oct 2026US 12,752,825 B2Siemens Mobility GmbH
- Intrusion detection6 Oct 2026US 12,752,827 B2International Electronic Machines Corp.
- Slip/skid discrimination device, brake control system, and slip/skid discrimination method22 Sep 2026US 12,741,621 B2Mitsubishi Electric Corporation
- Method for carrying out an emergency stop for a train22 Sep 2026US 12,741,681 B2Siemens Mobility GmbH
- Connector and system8 Oct 2026US 2026/0312341 A1HARTING International Innovation AG
- Vehicle system and method1 Oct 2026US 2026/0296509 A1Transportation IP Holdings, LLC
- Vehicle control system and method1 Oct 2026US 2026/0296512 A1Transportation IP Holdings, LLC
- Methods and systems for achieving vital ultra-wideband (uwb) based train control17 Sep 2026US 2026/0274312 A1Metrom Rail, LLC
- System and method for inferring vehicle route switch status17 Sep 2026US 2026/0274315 A1Transportation IP Holdings, LLC
Most cited
By later US patents
- LED vehicle lamp assembly654US 5,632,551 AGrote Industries, Inc. · 1997
- Led array vehicle lamp406US 5,528,474 AGrote Industries, Inc. · 1996
- Advanced vehicle operator intelligence system283US 9,135,803 B1State Farm Mutual Automobile Insurance Company · 2015
- 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