B61L 15/02
Head or tail indicators
Official title: Head or tail indicators, e.g. light
B61L15/02 (Head or tail indicators) appears on 32 US grants and 24 published applications in this corpus.
Search patents in B61L- Granted patents
- 32
- Published applications
- 24
- Assignees
- 22
- Inventors
- 57
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 3 | 3 |
| 2016 | 2 | 3 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 0 | 3 |
| 2020 | 2 | 2 |
| 2021 | 3 | 3 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 2 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for signalling events through a visibility marker associated with a train28 Jul 2026US 12,691,915 B2Siemens Mobility GmbH
- Positioning and odometry system2 Apr 2024US 11,945,480 B2Ground Transportation Systems Canada Inc.
- Rail vehicle system, rail vehicle, and visual sensing device11 Apr 2023US 11,623,674 B2Mirle Automation Corporation
- System for illuminating a rail vehicle and rail vehicle28 Sep 2021US 11,130,505 B2Siemens Mobility GmbH
- Lantern22 Jun 2021US 11,041,612 B1
- Train positioning method based on dynamic map19 Dec 2024US 2024/0416977 A1Casco Signal Ltd.
- Protection Circuit1 Aug 2024US 2024/0258791 A1Koito Electric Industries, Ltd.
- System and method for signalling events through a visibility marker associated with a train25 Aug 2022US 2022/0266878 A1Siemens Mobility GmbH
- Positioning and odometry system10 Jun 2021US 2021/0171079 A1Thales Canada Inc.
- System for illuminating a rail vehicle and rail vehicle13 May 2021US 2021/0139055 A1Siemens Mobility GmbH
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
- Vehicle marker light203US 4,654,629 APulse Electronics, Inc. · 1987
- Vehicle signal light fixture performing multiple signaling functions using an array of LEDs36US 6,897,771 B12005
- Self powered end of train unit33US 5,267,473 APulse Electronics, Inc. · 1993