B61L 23/044
Broken rails
Official title: {Broken rails}
B61L23/044 (Broken rails) appears on 207 US grants and 242 published applications in this corpus.
Search patents in B61L- Granted patents
- 207
- Published applications
- 242
- Assignees
- 112
- Inventors
- 457
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 3 |
| 2003 | 3 | 3 |
| 2004 | 2 | 4 |
| 2005 | 2 | 2 |
| 2006 | 0 | 3 |
| 2007 | 3 | 5 |
| 2008 | 0 | 3 |
| 2009 | 2 | 1 |
| 2010 | 2 | 0 |
| 2011 | 3 | 3 |
| 2012 | 0 | 1 |
| 2013 | 1 | 9 |
| 2014 | 6 | 21 |
| 2015 | 11 | 11 |
| 2016 | 5 | 17 |
| 2017 | 17 | 10 |
| 2018 | 9 | 21 |
| 2019 | 16 | 19 |
| 2020 | 13 | 15 |
| 2021 | 15 | 21 |
| 2022 | 12 | 13 |
| 2023 | 7 | 15 |
| 2024 | 16 | 9 |
| 2025 | 16 | 24 |
| 2026 | 12 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rail bond monitor18 Aug 2026US 12,709,313 B2Modular Railway Systems
- Railway communications system21 Jul 2026US 12,686,424 B2
- System and method for virtual block stick circuits7 Jul 2026US 12,673,707 B2BNSF Railway Company
- System and method for identifying a compromised or damaged section of a conductive body extending along a route23 Jun 2026US 12,662,174 B2Transportation IP Holdings, LLC
- Railroad virtual track block system16 Jun 2026US 12,654,753 B2BNSF Railway Company
- Railroad virtual track block system8 Oct 2026US 2026/0307691 A1BNSF Railway Company
- Systems and methods for assessing track condition6 Aug 2026US 2026/0225630 A1Fnv IP B.V.
- Abnormal object detection warning system and abnormal object detection method23 Jul 2026US 2026/0208774 A1Wistron Corporation
- System and method for virtual block operational status control with long block time delay30 Apr 2026US 2026/0116439 A1BNSF Railway Company
- Method and system for identifying track risks based on big data analysis30 Apr 2026US 2026/0116440 A1Ga Skytrain Mobility Group, LLC
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
- Video inspection system for inspection of rail components and method thereof83US 7,755,660 B2Ensco, Inc. · 2010
- Obstacle detection system81US 6,163,755 AIsrael Aircraft Industries Ltd. · 2000