F21L 4/027
The light sources being a led
Official title: {the light sources being a LED}
F21L4/027 (The light sources being a led) appears on 732 US grants and 853 published applications in this corpus.
Search patents in F21L- Granted patents
- 732
- Published applications
- 853
- Assignees
- 291
- Inventors
- 960
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 6 |
| 2002 | 10 | 9 |
| 2003 | 19 | 35 |
| 2004 | 27 | 53 |
| 2005 | 37 | 68 |
| 2006 | 41 | 60 |
| 2007 | 33 | 46 |
| 2008 | 28 | 37 |
| 2009 | 29 | 67 |
| 2010 | 43 | 61 |
| 2011 | 31 | 42 |
| 2012 | 42 | 38 |
| 2013 | 38 | 36 |
| 2014 | 27 | 27 |
| 2015 | 44 | 26 |
| 2016 | 19 | 28 |
| 2017 | 23 | 30 |
| 2018 | 28 | 23 |
| 2019 | 38 | 24 |
| 2020 | 30 | 23 |
| 2021 | 20 | 28 |
| 2022 | 26 | 22 |
| 2023 | 21 | 27 |
| 2024 | 20 | 11 |
| 2025 | 18 | 17 |
| 2026 | 11 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-directional light assembly18 Aug 2026US 12,710,145 B2Triplelite LLC
- Portable flashlight21 Jul 2026US 12,687,282 B2Black & Decker Inc.
- Portable lighting device with a flexible and deployable LED lighting element23 Jun 2026US 12,663,125 B2Promier Products Inc.
- Portable illumination apparatus23 Jun 2026US 12,663,126 B2Black & Decker Inc.
- Surgical eyewear lighting systems and methods28 Apr 2026US 12,611,284 B2Hawkeye Surgical Lighting, Inc.
- Portable lighting device with a flexible and deployable led lighting element8 Oct 2026US 2026/0309287 A1Promier Products Inc.
- Portable illumination apparatus24 Sep 2026US 2026/0287128 A1
- Surgical eyewear lighting systems and methods3 Sep 2026US 2026/0256542 A1Hawkeye Surgical Lighting, Inc.
- Mechanical suture fastener16 Jul 2026US 2026/0198917 A1
- Portable lighting device with an illuminated indicia30 Apr 2026US 2026/0117942 A1Promier Products Inc.
Most cited
By later US patents
- Preparedness flashlight1,025US 7,780,309 B2Eveready Battery Company, Inc. · 2010
- Method and apparatus for an L.E.D. flashlight530US 6,095,661 APPT Vision, Inc. · 2000
- High power LED305US 6,541,800 B2Weldon Technologies, Inc. · 2003
- LED illumination apparatus and card-type LED illumination source287US 6,949,772 B2Matsushita Electric Industrial Co., Ltd. · 2005
- Flashlight for covert applications247US 5,161,879 A1992