F21S 4/10
Lighting devices or systems using a string or strip of light sources
Official title: with light sources attached to loose electric cables, e.g. Christmas tree lights
F21S4/10 (Lighting devices or systems using a string or strip of light sources) appears on 1,529 US grants and 1,266 published applications in this corpus.
Search patents in F21S- Granted patents
- 1,529
- Published applications
- 1,266
- Assignees
- 471
- Inventors
- 1,599
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 7 | 0 |
| 1989 | 14 | 0 |
| 1990 | 14 | 0 |
| 1991 | 19 | 0 |
| 1992 | 14 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 18 | 0 |
| 1996 | 20 | 0 |
| 1997 | 28 | 0 |
| 1998 | 42 | 0 |
| 1999 | 41 | 0 |
| 2000 | 55 | 0 |
| 2001 | 55 | 1 |
| 2002 | 48 | 27 |
| 2003 | 35 | 49 |
| 2004 | 24 | 44 |
| 2005 | 26 | 50 |
| 2006 | 36 | 60 |
| 2007 | 39 | 56 |
| 2008 | 21 | 59 |
| 2009 | 19 | 53 |
| 2010 | 26 | 36 |
| 2011 | 41 | 45 |
| 2012 | 23 | 36 |
| 2013 | 42 | 40 |
| 2014 | 36 | 48 |
| 2015 | 38 | 53 |
| 2016 | 35 | 45 |
| 2017 | 49 | 50 |
| 2018 | 46 | 63 |
| 2019 | 84 | 69 |
| 2020 | 60 | 63 |
| 2021 | 70 | 53 |
| 2022 | 73 | 45 |
| 2023 | 57 | 55 |
| 2024 | 73 | 56 |
| 2025 | 104 | 66 |
| 2026 | 39 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Collapsible cone tree with multiple light strings15 Sep 2026US 12,733,763 B2Global Industries Holdings Ltd.
- Christmas-themed decoration for use with a tree8 Sep 2026US 12,727,698 B1
- LED waterproof light string1 Sep 2026US 12,723,748 B1Xiamen Longstar Lighting Co., Ltd.
- Conveniently assembled (light emitting diode) LED lamp25 Aug 2026US 12,716,556 B1Dongguan Guanyi Light-Decoration Co., Ltd.
- Simple light string18 Aug 2026US 12,710,162 B2Season Bright (Cambodia) Electronic Lighting Co., Ltd
- Breakaway bands for tree lighting and a tree lighting system including a light string with one or more breakaway bands8 Oct 2026US 2026/0309316 A1DeZaio Productions, Inc.
- Lighting shingle clip with rotatable feature27 Aug 2026US 2026/0251289 A1Canny Systems, LLC
- Internally Illuminated Toy Plush Sword13 Aug 2026US 2026/0233116 A1Lonme Limited
- Reliable high strength, waterproof light string13 Aug 2026US 2026/0235268 A1Ledup Manufacturing Group Limited
- Battery-powered string lights6 Aug 2026US 2026/0227041 A1
Most cited
By later US patents
- Methods and apparatus for controlling devices in a networked lighting system401US 6,777,891 B2Color Kinetics Incorporated · 2004
- Light-emitting diode assemblies and systems therefore311US 4,675,575 AE & G Enterprises · 1987
- Methods and apparatus for controlling devices in a networked lighting system258US 7,253,566 B2Color Kinetics Incorporated · 2007
- Modular lighting fixture225US 5,738,436 AM.G. Products, Inc. · 1998
- LED luminaire210US 7,102,172 B2Permlight Products, Inc. · 2006