B61L 29/32
Timing
Official title: Timing, e.g. advance warning of approaching train
B61L29/32 (Timing) appears on 58 US grants and 59 published applications in this corpus.
Search patents in B61L- Granted patents
- 58
- Published applications
- 59
- Assignees
- 32
- Inventors
- 109
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 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 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 2 |
| 2013 | 1 | 4 |
| 2014 | 3 | 5 |
| 2015 | 4 | 0 |
| 2016 | 2 | 3 |
| 2017 | 3 | 2 |
| 2018 | 2 | 7 |
| 2019 | 5 | 9 |
| 2020 | 7 | 4 |
| 2021 | 5 | 6 |
| 2022 | 4 | 3 |
| 2023 | 3 | 3 |
| 2024 | 5 | 1 |
| 2025 | 2 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Grade crossing system including grade crossing predictor in electrified propulsion territory1 Sep 2026US 12,722,676 B2Siemens Mobility GmbH
- Predictive railroad crossing safety notification and traffic control system and methods19 May 2026US 12,630,204 B2AJ Technologies LLC
- Method and apparatus with an axle counter for operating a railroad crossing, computer program product and delivery apparatus for the computer program product28 Oct 2025US 12,454,296 B2Siemens Mobility GmbH
- Providing a virtual railroad crossing warning9 Sep 2025US 12,409,875 B2Toyota Jidosha Kabushiki Kaisha
- Warning light control system with variable flashing rate8 Oct 2024US 12,114,404 B2Railway Equipment Company, Inc.
- Systems and methods with enhanced predictive railroad crossing traffic notification and railroad worker safety notification2 Jul 2026US 2026/0184357 A1
- Control of the movement of a semi-autonomous or autonomous motorised road vehicle approaching a level crossing25 Sep 2025US 2025/0299575 A1Valeo Vision
- Grade crossing system including grade crossing predictor in electrified propulsion territory12 Jun 2025US 2025/0187496 A1Siemens Mobility GmbH
- Providing a virtual railroad crossing warning22 May 2025US 2025/0162630 A1Toyota Jidosha Kabushiki Kaisha
- Predictive railroad crossing safety notification and traffic control system and methods16 May 2024US 2024/0157988 A1AJ Technologies LLC
Most cited
By later US patents
- Railroad maintenance-of-way personnel warning system apparatus and method therefor41US 6,113,037 AEVA Signal Corporation · 2000
- Dual signal frequency motion monitor and broken rail detector38US 4,306,694 AAmerican Standard Inc. · 1981
- Arrangement for detecting an object by means of sound conducted through a solid body and method of using such arrangement28US 5,265,831 A1993
- System and method for train operation approaching grade crossings26US 7,832,691 B2Lockheed Martin Corporation · 2010
- Apparatus and methods for providing relatively constant warning time at highway-rail crossings21US 7,575,202 B2Safetran Systems Corporation · 2009