B61L 5/1881
Wiring diagrams for power supply, control or testing
Official title: {Wiring diagrams for power supply, control or testing}
B61L5/1881 (Wiring diagrams for power supply, control or testing) appears on 57 US grants and 64 published applications in this corpus.
Search patents in B61L- Granted patents
- 57
- Published applications
- 64
- Assignees
- 45
- Inventors
- 140
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 4 | 5 |
| 2004 | 1 | 2 |
| 2005 | 1 | 5 |
| 2006 | 4 | 5 |
| 2007 | 1 | 1 |
| 2008 | 2 | 5 |
| 2009 | 1 | 1 |
| 2010 | 3 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 2 |
| 2013 | 2 | 2 |
| 2014 | 1 | 5 |
| 2015 | 5 | 6 |
| 2016 | 2 | 3 |
| 2017 | 7 | 0 |
| 2018 | 0 | 1 |
| 2019 | 2 | 3 |
| 2020 | 0 | 2 |
| 2021 | 2 | 3 |
| 2022 | 3 | 0 |
| 2023 | 2 | 1 |
| 2024 | 1 | 6 |
| 2025 | 5 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- System and method for railroad smart flasher lamps29 Jul 2025US 12,376,212 B2BNSF Railway Company
- Systems and methods for visual inspection of signal lights at railroad crossings8 Jul 2025US 12,354,376 B2Siemens Mobility GmbH
- System for securing communication between central controller and signaling devices in traffic signaling networks11 Mar 2025US 12,246,765 B2Tata Consultancy Services Limited
- Method for ensuring signal light integrity and viewability14 Jan 2025US 12,195,066 B2Tektracking, LLC
- Light-out detection for wayside signals14 Jan 2025US 12,196,608 B2Siemens Mobility GmbH
- System and method for railroad smart flasher lamps20 Nov 2025US 2025/0358915 A1BNSF Railway Company
- System for securing communication between central controller and signaling devices in traffic signaling networks26 Dec 2024US 2024/0425094 A1Tata Consultancy Services Limited
- Light-out detection for wayside signals28 Nov 2024US 2024/0393168 A1Siemens Mobility GmbH
- Systems and methods for visual inspection of signal lights at railroad crossings3 Oct 2024US 2024/0331404 A1Siemens Mobility GmbH
- System and method for railroad smart flasher lamps11 Jul 2024US 2024/0237172 A1BNSF Railway Company
Most cited
By later US patents
- Circuit for interfacing between a conventional traffic signal conflict monitor and light emitting diodes replacing a conventional incandescent bulb in the signal204US 6,150,771 APrecision Solar Controls Inc. · 2000
- Module for powering and monitoring light-emitting diodes98US 6,762,563 B2GELcore, LLC · 2004
- Method and device for remote monitoring of LED lamps58US 6,600,324 B2GELcore, LLC · 2003
- Solar signs57US 4,319,310 A1982
- Method and device for remote monitoring of led lamps49US 6,608,485 B2GELcore, LLC · 2003