F21S 9/024
Using a supplementary light source for emergency lighting
Official title: {using a supplementary light source for emergency lighting}
F21S9/024 (Using a supplementary light source for emergency lighting) appears on 43 US grants and 45 published applications in this corpus.
Search patents in F21S- Granted patents
- 43
- Published applications
- 45
- Assignees
- 32
- Inventors
- 87
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 5 |
| 2015 | 3 | 4 |
| 2016 | 2 | 8 |
| 2017 | 5 | 2 |
| 2018 | 3 | 2 |
| 2019 | 4 | 3 |
| 2020 | 6 | 3 |
| 2021 | 4 | 6 |
| 2022 | 5 | 2 |
| 2023 | 3 | 2 |
| 2024 | 1 | 3 |
| 2025 | 4 | 2 |
| 2026 | 1 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Lighting assembly and emergency indicator light comprising the same28 Jul 2026US 12,692,994 B2Je Woo Corporation, Ltd.
- Hazardous area lighting with emergency power back up and wireless communications23 Sep 2025US 12,422,116 B2Appleton Grp LLC
- Lighting fixture with an integrated mechanical fixing and electrical connection system29 Jul 2025US 12,372,216 B2Beghelli S.p.A.
- Modular auxiliary lighting system with asymmetrical illumination sources6 May 2025US 12,292,176 B2M3 Innovation, LLC
- Safety corridor arrangement25 Feb 2025US 12,236,775 B2
- Lighting assembly and emergency indicator light comprising the same25 Jun 2026US 2026/0177216 A1Je Woo Corporation, Ltd.
- Intelligent lighting fixture with emergency backup system6 Nov 2025US 2025/0341295 A1E2 Lighting International Inc.
- Modular Auxiliary Lighting System with Asymmetrical Illumination Sources3 Apr 2025US 2025/0109830 A1M3 Innovation, LLC
- Internal lighting module26 Dec 2024US 2024/0426441 A1Signify Holding B. V.
- Lighting fixture with an integrated mechanical fixing and electrical connection system10 Oct 2024US 2024/0337358 A1Beghelli S.p.A.
Most cited
By later US patents
- Modular lighting systems209US 8,232,745 B2Digital Lumens Incorporated · 2012
- Emergency exit route illumination system and methods15US 9,689,542 B22017
- Smart home-care lighting system14US 9,854,641 B22017
- Uniformly lit planar field of illumination6US 11,149,936 B2Exposure Illumination Architects, Inc. · 2021
- Building egress lighting apparatus, system, method and computer program product6US 11,788,692 B1Exposure Illumination Architects, Inc. · 2023