B61L 25/025
Absolute localisation
Official title: {Absolute localisation, e.g. providing geodetic coordinates}
B61L25/025 (Absolute localisation) appears on 911 US grants and 1,108 published applications in this corpus.
Search patents in B61L- Granted patents
- 911
- Published applications
- 1,108
- Assignees
- 345
- Inventors
- 1,891
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 3 |
| 2002 | 14 | 10 |
| 2003 | 10 | 10 |
| 2004 | 9 | 18 |
| 2005 | 7 | 15 |
| 2006 | 14 | 17 |
| 2007 | 12 | 16 |
| 2008 | 8 | 10 |
| 2009 | 5 | 20 |
| 2010 | 10 | 25 |
| 2011 | 6 | 8 |
| 2012 | 14 | 26 |
| 2013 | 25 | 31 |
| 2014 | 27 | 39 |
| 2015 | 34 | 38 |
| 2016 | 51 | 80 |
| 2017 | 62 | 85 |
| 2018 | 52 | 82 |
| 2019 | 69 | 86 |
| 2020 | 57 | 96 |
| 2021 | 60 | 85 |
| 2022 | 60 | 62 |
| 2023 | 66 | 76 |
| 2024 | 68 | 63 |
| 2025 | 80 | 76 |
| 2026 | 47 | 31 |
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
- System and method for managing autonomous robots using an autonomous robot localization system15 Sep 2026US 12,735,081 B2Flexli Technologies Private Limited
- Handbrake and impact monitoring system8 Sep 2026US 12,728,900 B2TTX Company
- Method and apparatus for a train control system8 Sep 2026US 12,728,901 B2
- Systems and methods for detecting tanks in railway environments1 Sep 2026US 12,722,670 B2BNSF Railway Company
- Apparatuses, systems, and methods for monitoring moving vehicles8 Oct 2026US 2026/0307693 A1Georgia Tech Research Corporation
- Methods and Systems for Automatic Track Inspection and Evaluation1 Oct 2026US 2026/0296511 A1Intramotev Inc.
- In-motion track stiffness change detection17 Sep 2026US 2026/0274311 A1University of South Carolina
- Intersection management system17 Sep 2026US 2026/0274316 A1Transportation IP Holdings, LLC
- Reinforced generation method for hard-to-reach scenarios of radio block center (rbc) of train autonomous circulation and navigation (tacn) and generation system thereof, and rbc test system20 Aug 2026US 2026/0244809 A1Casco Signal Ltd.
Most cited
By later US patents
- Local communication network for power reduction and enhanced reliability in a multiple node tracking system374US 5,691,980 AGeneral Electric Company · 1997
- Use of mutter mode in asset tracking for gathering data from cargo sensors327US 5,686,888 AGeneral Electric Company · 1997
- Railcar location using mutter networks and locomotive transmitter during transit292US 5,682,139 AGeneral Electric Company · 1997
- Protocol and mechanism for primary and mutter mode communication for asset tracking211US 5,588,005 AGeneral Electric Company · 1996
- Ground-based mobile maintenance facilities for unmanned aerial vehicles189US 9,718,564 B1Amazon Technologies, Inc. · 2017