B61L 5/189
Using flashing light sources
Official title: {using flashing light sources}
B61L5/189 (Using flashing light sources) appears on 9 US grants and 15 published applications in this corpus.
Search patents in B61L- Granted patents
- 9
- Published applications
- 15
- Assignees
- 12
- Inventors
- 34
- Latest grant
- 15 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 2 |
| 2019 | 3 | 1 |
| 2020 | 0 | 3 |
| 2021 | 1 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
By publication year.
Recent patents
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- Derail warning light system2 Aug 2022US 11,400,963 B2Focused Technology Solutions, Inc.
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- Train derailer placement warning device1 Oct 2019US 10,427,698 B2Green Timber Energy
- BlueflagProtection automatic LED display dampened foot released sign pole systems3 Sep 2019US 10,403,176 B1
- Derail Warning Light System3 Jul 2025US 2025/0214634 A1Railserve, Inc.
- Derail Warning Light System18 May 2023US 2023/0150558 A1Railserve, Inc.
- Lamp assembly, lamp system and method for operating a lamp system11 Mar 2021US 2021/0070330 A1Siemens Mobility GmbH
- Supplemental shunting device indicator7 Jan 2021US 2021/0001901 A1National Railroad Passenger Corporation
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Most cited
By later US patents
- Method and apparatus for monitoring and controlling warning systems10US 7,098,774 B2General Electric Company · 2006
- Method and system for determining signal state5US 8,581,499 B2General Electric Company · 2013
- BlueflagProtection automatic LED display dampened foot released sign pole systems1US 10,403,176 B12019
- Train derailer placement warning device1US 10,427,698 B2Green Timber Energy · 2019
- Derail warning light system1US 11,400,963 B2Focused Technology Solutions, Inc. · 2022