B61L 23/06
Control, warning or like safety means along the route or between vehicles
Official title: for warning men working on the route
B61L23/06 (Control, warning or like safety means along the route or between vehicles) appears on 108 US grants and 118 published applications in this corpus.
Search patents in B61L- Granted patents
- 108
- Published applications
- 118
- Assignees
- 58
- Inventors
- 252
- Latest grant
- 6 Oct 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 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 2 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 4 |
| 2012 | 1 | 3 |
| 2013 | 1 | 4 |
| 2014 | 3 | 4 |
| 2015 | 4 | 3 |
| 2016 | 3 | 7 |
| 2017 | 2 | 6 |
| 2018 | 5 | 14 |
| 2019 | 10 | 6 |
| 2020 | 12 | 12 |
| 2021 | 8 | 11 |
| 2022 | 5 | 10 |
| 2023 | 9 | 10 |
| 2024 | 9 | 9 |
| 2025 | 6 | 6 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and systems for decentralized rail signaling and positive train control6 Oct 2026US 12,752,823 B2Metrom Rail, LLC
- Method and system for three dimensional positioning in subway construction site, and medium16 Jun 2026US 12,659,908 B2China Railway Engineering Services Co., Ltd.
- System and method for railroad personnel safety assurance12 May 2026US 12,623,702 B2BNSF Railway Company
- Railyard train detection and early warning system14 Apr 2026US 12,600,390 B2Miller Felpax Corporation
- Collision protection and safety system for rail vehicles31 Mar 2026US 12,589,785 B2Harsco Technologies LLC
- Railway train-ground interconnected perception and early warning method6 Aug 2026US 2026/0225631 A1Casco Signal Ltd.
- Axle counter decommissioning system23 Jul 2026US 2026/0208777 A1Dual Inventive Holding B.V.
- Post linkage apparatus and method applied to ctc construction plan11 Jun 2026US 2026/0162037 A1Casco Signal Ltd.
- Motorized railway safety cart and deployment system thereof8 Jan 2026US 2026/0008486 A1Kronos Aerial Photography Ltd.
- Systems and methods for controlling a railroad crossing gate8 Jan 2026US 2026/0008488 A1
Most cited
By later US patents
- Wireless danger proximity warning system and method108US 7,148,791 B2Time Domain Corporation · 2006
- Traffic warning system107US 7,075,427 B1EVA Signal Corporation · 2006
- Warning systems63US 6,232,887 B12001
- Safety system for railroad personnel58US 7,624,952 B12009
- Railroad radio frequency waveguide54US 4,207,569 A1980