B61L 25/023
Determination of driving direction of vehicle or train
Official title: {Determination of driving direction of vehicle or train}
B61L25/023 (Determination of driving direction of vehicle or train) appears on 158 US grants and 162 published applications in this corpus.
Search patents in B61L- Granted patents
- 158
- Published applications
- 162
- Assignees
- 90
- Inventors
- 412
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 3 |
| 2002 | 8 | 3 |
| 2003 | 3 | 4 |
| 2004 | 0 | 5 |
| 2005 | 5 | 8 |
| 2006 | 7 | 6 |
| 2007 | 4 | 2 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 4 |
| 2012 | 3 | 2 |
| 2013 | 2 | 3 |
| 2014 | 3 | 5 |
| 2015 | 5 | 5 |
| 2016 | 7 | 10 |
| 2017 | 6 | 7 |
| 2018 | 2 | 10 |
| 2019 | 5 | 15 |
| 2020 | 14 | 16 |
| 2021 | 12 | 9 |
| 2022 | 12 | 13 |
| 2023 | 6 | 10 |
| 2024 | 10 | 8 |
| 2025 | 12 | 7 |
| 2026 | 8 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Intelligent Railroad At-Grade Crossings21 May 2026US 2026/0138655 A1Cavnue Technology, LLC
- Train simulator test set and method therefor7 May 2026US 2026/0125087 A1BNSF Railway Company
- System and method for locating a guided vehicle on a railway network26 Mar 2026US 2026/0084729 A1Siemens Rail Automation S.A.U.
Most cited
By later US patents
- Portable self-contained tracking unit and GPS tracking system170US 6,339,397 B12002
- Rail vehicle positioning system165US 5,129,605 ARockwell International Corporation · 1992
- Rail navigation system123US 5,740,547 AWestinghouse Air Brake Company · 1998
- Method and apparatus for initializing an automated train control system109US 5,803,411 AABB Daimler-Benz Transportation (North America) Inc. · 1998
- Detector for sensing motion and direction of a railway device107US 6,087,950 AUnion Switch & Signal Inc. · 2000