F21K 2/00
Non-electric light sources using luminescence
Official title: Non-electric light sources using luminescence (using excitation by radioactivity G21H3/02, H01J65/06, H01J65/08; using excitation by an external electromagnetic field or by external corpuscular radiation H01J65/04); Light sources using electrochemiluminescence
F21K2/00 (Non-electric light sources using luminescence) appears on 491 US grants and 393 published applications in this corpus.
Search patents in F21K- Granted patents
- 491
- Published applications
- 393
- Assignees
- 231
- Inventors
- 804
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 10 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 10 | 0 |
| 1981 | 8 | 0 |
| 1982 | 2 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 8 | 0 |
| 1993 | 11 | 0 |
| 1994 | 12 | 0 |
| 1995 | 13 | 0 |
| 1996 | 10 | 0 |
| 1997 | 15 | 0 |
| 1998 | 12 | 0 |
| 1999 | 12 | 0 |
| 2000 | 15 | 0 |
| 2001 | 8 | 0 |
| 2002 | 8 | 16 |
| 2003 | 12 | 18 |
| 2004 | 11 | 17 |
| 2005 | 7 | 21 |
| 2006 | 8 | 23 |
| 2007 | 11 | 7 |
| 2008 | 2 | 8 |
| 2009 | 7 | 16 |
| 2010 | 18 | 12 |
| 2011 | 6 | 8 |
| 2012 | 4 | 15 |
| 2013 | 9 | 15 |
| 2014 | 13 | 26 |
| 2015 | 13 | 23 |
| 2016 | 20 | 21 |
| 2017 | 22 | 27 |
| 2018 | 18 | 26 |
| 2019 | 24 | 15 |
| 2020 | 18 | 12 |
| 2021 | 15 | 14 |
| 2022 | 7 | 15 |
| 2023 | 11 | 10 |
| 2024 | 20 | 15 |
| 2025 | 6 | 9 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotorcraft with a blade tip illumination system8 Sep 2026US 12,729,012 B2Airbus Helicopters Deutschland GmbH
- Energy augmentation structures for use with energy emitters and collectors11 Aug 2026US 12,702,861 B2Immunolight, LLC
- Energy augmentation structures, energy emitters or energy collectors containing the same, and their use in solar cells and other energy conversion devices5 May 2026US 12,616,848 B2Immunolight, LLC
- Photoluminescence keyboard glyph lighting16 Sep 2025US 12,416,399 B2Apple Inc.
- Reusable photoluminescent apparatus, methods, and systems15 Jul 2025US 12,359,117 B2Nyoka Design Corp.
- Fluid-activated biodegradable bioluminescent glowing apparatus, compositions, kits, methods, and systems27 Aug 2026US 2026/0251271 A1Nyoka Design Corp.
- Transparent wood composite, method for preparing the same, and optical film comprising the same9 Jul 2026US 2026/0192486 A1Hyundai Motor Company
- Luminescent adhesive decoration for horology components30 Apr 2026US 2026/0117093 A1The Swatch Group Research and Development Ltd
- Lightweight phosphorescent strip30 Apr 2026US 2026/0117937 A1Pexco Aerospace, Inc.
- Wireless lighting control system25 Dec 2025US 2025/0389394 A1Fanlight Co., Ltd.
Most cited
By later US patents
- Medical valve and method of use527US 5,685,866 AICU Medical, Inc. · 1997
- Bioluminescent novelty items261US 5,876,995 A1999
- Fluid transfer device and method of use248US 6,599,273 B1ICU Medical, Inc. · 2003
- Advanced photoluminescent components and formulation/fabrication methods for production thereof230US 8,286,378 B2Afterglow, LLC. · 2012
- Medical valve and method of use227US 5,873,862 AICU Medical, Inc. · 1999