B61L 9/04
Electric
Official title: electric
B61L9/04 (Electric) appears on 18 US grants and 21 published applications in this corpus.
Search patents in B61L- Granted patents
- 18
- Published applications
- 21
- Assignees
- 18
- Inventors
- 28
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 3 |
| 2019 | 1 | 2 |
| 2020 | 4 | 5 |
| 2021 | 5 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 2 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Light-out detection for wayside signals14 Jan 2025US 12,196,608 B2Siemens Mobility GmbH
- System and method for monitoring a railroad grade crossing6 Aug 2024US 12,054,185 B2Siemens Mobility GmbH
- Location lighting for use in offgrid railroad2 Apr 2024US 11,946,619 B2Electrical Solutions of Regina, Inc.
- Systems and methods for controlling railroad highway crossing flashers28 Dec 2021US 11,208,131 B2BNSF Railway Company
- Optical system for a LED signal and wayside LED signal26 Oct 2021US 11,155,285 B2Siemens Mobility GmbH
- Rail lighting fixture and method for manufacture thereof27 Mar 2025US 2025/0100596 A1M.B. Broekhuis Beheer B.V.
- Light-out detection for wayside signals28 Nov 2024US 2024/0393168 A1Siemens Mobility GmbH
- Location lighting for use in offgrid railroad applications8 Feb 2024US 2024/0044464 A1Electrical Solutions of Regina, Inc.
- Switch Gap Detection System2 Mar 2023US 2023/0060665 A1
- System and method for monitoring a railroad grade crossing4 Mar 2021US 2021/0061328 A1Siemens Mobility GmbH
Most cited
By later US patents
- Railroad crossing traffic warning system apparatus and method therefore55US 5,735,492 A1998
- Railroad crossing traffic warning system apparatus and method therefore39US 5,954,299 AEVA Signal Corporation · 1999
- Broken wheel detection system7US 10,435,052 B2Tetra Tech, Inc. · 2019
- Railroad crossing warning system5US 10,148,760 B22018
- System for use in illumination of railway feature2US 8,529,107 B2Tripsplusone, Inc. · 2013