B61L 23/048
Road bed changes
Official title: {Road bed changes, e.g. road bed erosion}
B61L23/048 (Road bed changes) appears on 87 US grants and 114 published applications in this corpus.
Search patents in B61L- Granted patents
- 87
- Published applications
- 114
- Assignees
- 70
- Inventors
- 265
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 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 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 4 |
| 2008 | 1 | 0 |
| 2009 | 1 | 3 |
| 2010 | 1 | 0 |
| 2011 | 2 | 2 |
| 2012 | 0 | 3 |
| 2013 | 3 | 4 |
| 2014 | 3 | 4 |
| 2015 | 3 | 5 |
| 2016 | 3 | 5 |
| 2017 | 4 | 9 |
| 2018 | 10 | 10 |
| 2019 | 5 | 6 |
| 2020 | 8 | 12 |
| 2021 | 4 | 7 |
| 2022 | 8 | 4 |
| 2023 | 5 | 13 |
| 2024 | 9 | 5 |
| 2025 | 8 | 8 |
| 2026 | 0 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sensor-enabled system and method for monitoring the health, condition, and/or status of infrastructure23 Dec 2025US 12,504,268 B2Tensar International Corporation
- Sensor-enabled system and method for monitoring the health, condition, and/or status of pavement and vehicular infrastructure28 Oct 2025US 12,455,156 B2Tensar International Corporation
- Systems and methods for identifying potential deficiencies in railway environment objects14 Oct 2025US 12,441,377 B2BNSF Railway Company
- System and method for railroad track geometry measurement22 Jul 2025US 12,367,570 B2BNSF Railway Company
- Device, system and method for monitoring conditions on a railway track24 Jun 2025US 12,337,882 B2Hisway Labs (Pty) Ltd
- Systems and methods for automatically determining ballast excesses and shortages13 Aug 2026US 2026/0237088 A1BNSF Railway Company
- Systems and methods for assessing track condition6 Aug 2026US 2026/0225630 A1Fnv IP B.V.
- System and method for monitoring level crossing30 Jul 2026US 2026/0220614 A1Hack Partners Limited
- Systems and methods for identifying potential deficiencies in railway environment objects23 Apr 2026US 2026/0109378 A1BNSF Railway Company
- Method for automatically evaluating track measurement data23 Apr 2026US 2026/0109379 A1HP3 Real GmbH
Most cited
By later US patents
- Automated track inspection vehicle and method122US 6,064,428 ANational Railroad Passenger Corporation · 2000
- Method and apparatus for monitoring railway defects102US 5,867,404 ACairo Systems, Inc. · 1999
- Method and apparatus for monitoring railway defects89US 5,956,664 ACairo Systems, Inc. · 1999
- Automated track inspection vehicle and method64US 6,356,299 B1National Railroad Passenger Corporation · 2002
- Method and apparatus for detecting railtrack failures by comparing data from a plurality of railcars47US 5,987,979 ACairo Systems, Inc. · 1999