F21Y 2115/20
Electroluminescent [el] light sources
Official title: Electroluminescent [EL] light sources
F21Y2115/20 (Electroluminescent [el] light sources) appears on 198 US grants and 225 published applications in this corpus.
Search patents in F21Y- Granted patents
- 198
- Published applications
- 225
- Assignees
- 109
- Inventors
- 404
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 6 |
| 2003 | 5 | 4 |
| 2004 | 2 | 3 |
| 2005 | 3 | 6 |
| 2006 | 3 | 3 |
| 2007 | 3 | 1 |
| 2008 | 1 | 4 |
| 2009 | 0 | 4 |
| 2010 | 1 | 11 |
| 2011 | 3 | 8 |
| 2012 | 4 | 13 |
| 2013 | 8 | 15 |
| 2014 | 8 | 8 |
| 2015 | 8 | 20 |
| 2016 | 10 | 19 |
| 2017 | 21 | 21 |
| 2018 | 19 | 24 |
| 2019 | 21 | 11 |
| 2020 | 17 | 12 |
| 2021 | 11 | 9 |
| 2022 | 5 | 4 |
| 2023 | 5 | 11 |
| 2024 | 8 | 3 |
| 2025 | 6 | 5 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electronic module, display device, photoelectric conversion device, electronic apparatus, illumination device, moving body, and wearable device22 Sep 2026US 12,745,541 B2Canon Kabushiki Kaisha
- Energy harvesting system for harvesting electric energy from a power cable and an illuminating system for illuminating said power cable using the electric energy harvested by the energy harvesting system15 Sep 2026US 12,738,396 B2Prysmian S P A.
- White light organic EL element and illuminating device comprising green red light emitting unit and blue light emitting unit16 Dec 2025US 12,501,765 B2Kaneka Corporation
- LED lamp8 Jul 2025US 12,352,413 B2Shenzhen Snc Opto Electronic Co., Ltd
- Light-emitting device13 May 2025US 12,297,981 B2Semiconductor Energy Laboratory Co.Ltd.
- Illumination system18 Dec 2025US 2025/0383068 A1Japan Display Inc.
- Lighting device having a lighting module arranged in front of an illumination module23 Oct 2025US 2025/0327553 A1Valeo Vision
- Light-emitting device28 Aug 2025US 2025/0271122 A1Semiconductor Energy Laboratory Co.Ltd.
- Led lamp19 Jun 2025US 2025/0198604 A1Shenzhen Snc Opto Electronic Co., Ltd
- Light strip6 Feb 2025US 2025/0043937 A1Ming Yung Hung Material of Lights Co., Ltd
Most cited
By later US patents
- LED illumination apparatus and card-type LED illumination source287US 6,949,772 B2Matsushita Electric Industrial Co., Ltd. · 2005
- High power radiation emitter device and heat dissipating package for electronic components249US 6,639,360 B2Gentex Corporation · 2003
- Card-type LED illumination source120US 7,259,403 B2Matsushita Electric Industrial Co., Ltd. · 2007
- LED illumination apparatus and card-type LED illumination source99US 7,375,381 B2Matsushita Electric Industrial Co., Ltd. · 2008
- Light switch assembly81US 6,608,253 B12003