B61L 29/284
Using rail-contacts, rail microphones, or the like, controlled by the vehicle
Official title: {using rail-contacts, rail microphones, or the like, controlled by the vehicle}
B61L29/284 (Using rail-contacts, rail microphones, or the like, controlled by the vehicle) appears on 22 US grants and 14 published applications in this corpus.
Search patents in B61L- Granted patents
- 22
- Published applications
- 14
- Assignees
- 14
- Inventors
- 48
- Latest grant
- 27 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 2 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 2 |
| 2016 | 3 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Grade crossing control system and method for determining track circuit impedance27 May 2025US 12,311,990 B2Siemens Mobility GmbH
- Train direction detection apparatus and method22 Mar 2022US 11,279,387 B2Vossloh Signaling, Inc.
- Railway road crossing warning system with sensing system electrically-decoupled from railroad track1 Jun 2021US 11,021,180 B2Siemens Mobility GmbH
- System and method for early train detection17 Nov 2020US RE48,307 E1Wavetrain Systems AS
- Route feature identification system and method19 Dec 2017US 9,845,023 B2General Electric Company
- Grade crossing control system and method for determining track circuit impedance12 Oct 2023US 2023/0322283 A1Siemens Mobility GmbH
- Railway road crossing warning system with sensing system electrically-decoupled from railroad track10 Oct 2019US 2019/0308649 A1Siemens Industry, Inc.
- Railway crossing and signaling system and method19 Sep 2019US 2019/0283788 A1Evolutionary Markings, Inc.
- System for securing of safety of railroad crossing against vehicle entry during warning signaling9 Aug 2018US 2018/0222506 A1
- Route feature identification system and method16 Feb 2017US 2017/0043678 A1General Electric Company
Most cited
By later US patents
- Railway train signalling system for remotely operating warning devices at crossings and for receiving warning device operational information86US 5,620,155 A1997
- Railway wheel counter and block control systems37US 6,371,417 B1L.B. Foster Company A. Pennsylvania Corp. · 2002
- Railroad highway crossing warning system30US 4,324,376 AAmerican Standard Inc. · 1982
- Train warning system30US 5,729,213 A1998
- Processing system for grade crossing warning29US 4,581,700 ASAB Harmon Industries, Inc. · 1986