F21S 9/022
Emergency lighting devices
Official title: {Emergency lighting devices}
F21S9/022 (Emergency lighting devices) appears on 653 US grants and 627 published applications in this corpus.
Search patents in F21S- Granted patents
- 653
- Published applications
- 627
- Assignees
- 250
- Inventors
- 918
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 10 | 0 |
| 2001 | 7 | 2 |
| 2002 | 6 | 4 |
| 2003 | 7 | 8 |
| 2004 | 7 | 13 |
| 2005 | 7 | 24 |
| 2006 | 21 | 15 |
| 2007 | 13 | 17 |
| 2008 | 8 | 32 |
| 2009 | 12 | 27 |
| 2010 | 15 | 31 |
| 2011 | 29 | 24 |
| 2012 | 17 | 26 |
| 2013 | 21 | 26 |
| 2014 | 29 | 39 |
| 2015 | 18 | 20 |
| 2016 | 28 | 39 |
| 2017 | 42 | 39 |
| 2018 | 33 | 44 |
| 2019 | 38 | 37 |
| 2020 | 51 | 40 |
| 2021 | 49 | 44 |
| 2022 | 31 | 21 |
| 2023 | 25 | 13 |
| 2024 | 22 | 19 |
| 2025 | 23 | 15 |
| 2026 | 10 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rechargeable electrical outlet with integrated lighting with connectivity8 Sep 2026US 12,731,948 B2O'Reilly Winship, LLC
- System and method for providing an illuminating, visual indication of a specific physical location and situation11 Aug 2026US 12,705,961 B1
- Lighting assembly and emergency indicator light comprising the same28 Jul 2026US 12,692,994 B2Je Woo Corporation, Ltd.
- LED downlight power supply circuit and LED downlight23 Jun 2026US 12,664,864 B2
- Wall light fixture14 Apr 2026US 12,601,474 B1
- Visual alert device27 Aug 2026US 2026/0253476 A1Isar LLC
- Lighting assembly and emergency indicator light comprising the same25 Jun 2026US 2026/0177216 A1Je Woo Corporation, Ltd.
- Lighting device with battery backup5 Mar 2026US 2026/0063259 A1ABL IP Holding LLC
- Building egress lighting apparatus method and system with direction designator projection features26 Feb 2026US 2026/0055860 A1Exposure IP 2, LLC
- Emergency power supply for ufo highbay light26 Feb 2026US 2026/0055863 A1Dongguan Haiyue Intelligent Technology Co., Ltd
Most cited
By later US patents
- LED replacement for fluorescent lighting371US 6,860,628 B22005
- Wireless emergency safety light with sensing means for conventional light switch or plug receptacle292US 6,010,228 A2000
- Wireless lighting devices and applications246US 8,033,686 B2Wireless Environment, LLC · 2011
- LED puck light with detachable base214US 6,641,283 B1GELcore, LLC · 2003
- Modular lighting systems209US 8,232,745 B2Digital Lumens Incorporated · 2012