B61L 25/04
Indicating or recording train identities
B61L25/04 (Indicating or recording train identities) appears on 231 US grants and 198 published applications in this corpus.
Search patents in B61L- Granted patents
- 231
- Published applications
- 198
- Assignees
- 146
- Inventors
- 523
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 5 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 3 |
| 2005 | 1 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 2 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 4 |
| 2014 | 0 | 5 |
| 2015 | 4 | 6 |
| 2016 | 8 | 14 |
| 2017 | 10 | 18 |
| 2018 | 11 | 15 |
| 2019 | 9 | 14 |
| 2020 | 14 | 13 |
| 2021 | 9 | 28 |
| 2022 | 8 | 12 |
| 2023 | 16 | 9 |
| 2024 | 16 | 12 |
| 2025 | 16 | 30 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for detecting and recognizing a railcar identifier18 Aug 2026US 12,711,785 B2Nice North America LLC
- Railway vehicle charging control method, railway vehicle, charging station and charging system21 Jul 2026US 12,686,291 B2BYD Company Limited
- System and method for mover self-navigation in an independent cart system7 Jul 2026US 12,673,704 B2Rockwell Automation Technologies, Inc.
- Apparatuses, systems, and methods for monitoring moving vehicles23 Jun 2026US 12,662,176 B2Norfolk Southern Corporation & Georgia Tech Research Corporation
- Vehicle system and method9 Jun 2026US 12,649,504 B2Transportation IP Holdings, LLC
- Apparatuses, systems, and methods for monitoring moving vehicles8 Oct 2026US 2026/0307693 A1Georgia Tech Research Corporation
- Vehicle system and method1 Oct 2026US 2026/0296509 A1Transportation IP Holdings, LLC
- Methods and systems for achieving vital ultra-wideband (uwb) based train control17 Sep 2026US 2026/0274312 A1Metrom Rail, LLC
- Wireless train control system and formation number acquisition method3 Sep 2026US 2026/0257709 A1Mitsubishi Electric Corporation
- Wireless vehicle management system2 Jul 2026US 2026/0184355 A1Arup Ventures Limited
Most cited
By later US patents
- Interrogation, and detection system536US 4,075,632 AThe United States of America as represented by the United States Department of Energy · 1978
- System for reading and writing data from and into remote tags276US 5,030,807 AAmtech Corporation · 1991
- System for identifying particular objects256US 4,739,328 AAmtech Corporation · 1988
- Impedance matching coil assembly for an inductively coupled transponder181US 5,084,699 ATrovan Limited · 1992
- Interrogator-responder communication system170US 4,912,471 AMitron Systems Corporation · 1990