F21S 4/00
Lighting devices or systems using a string or strip of light sources
F21S4/00 (Lighting devices or systems using a string or strip of light sources) appears on 4,615 US grants and 4,579 published applications in this corpus.
Search patents in F21S- Granted patents
- 4,615
- Published applications
- 4,579
- Assignees
- 1,688
- Inventors
- 6,440
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 7 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 10 | 0 |
| 1986 | 15 | 0 |
| 1987 | 11 | 0 |
| 1988 | 15 | 0 |
| 1989 | 23 | 0 |
| 1990 | 25 | 0 |
| 1991 | 36 | 0 |
| 1992 | 23 | 0 |
| 1993 | 21 | 0 |
| 1994 | 24 | 0 |
| 1995 | 36 | 0 |
| 1996 | 30 | 0 |
| 1997 | 47 | 0 |
| 1998 | 70 | 0 |
| 1999 | 55 | 0 |
| 2000 | 86 | 0 |
| 2001 | 98 | 7 |
| 2002 | 96 | 90 |
| 2003 | 88 | 118 |
| 2004 | 72 | 103 |
| 2005 | 65 | 136 |
| 2006 | 74 | 102 |
| 2007 | 100 | 117 |
| 2008 | 49 | 141 |
| 2009 | 48 | 135 |
| 2010 | 81 | 150 |
| 2011 | 100 | 185 |
| 2012 | 90 | 174 |
| 2013 | 134 | 166 |
| 2014 | 148 | 208 |
| 2015 | 150 | 190 |
| 2016 | 161 | 177 |
| 2017 | 197 | 240 |
| 2018 | 221 | 256 |
| 2019 | 300 | 295 |
| 2020 | 283 | 289 |
| 2021 | 324 | 271 |
| 2022 | 279 | 263 |
| 2023 | 252 | 203 |
| 2024 | 242 | 197 |
| 2025 | 265 | 214 |
| 2026 | 124 | 152 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- LED filament and a lamp29 Sep 2026US 12,747,840 B2Signify Holding B. V.
- Collapsible cone tree with multiple light strings15 Sep 2026US 12,733,763 B2Global Industries Holdings Ltd.
- Flexible lighting device15 Sep 2026US 12,736,192 B2
- Chain-shaped decorative lamp15 Sep 2026US 12,736,203 B1
- Christmas-themed decoration for use with a tree8 Sep 2026US 12,727,698 B1
- Light assembly8 Oct 2026US 2026/0309288 A1Vista Manufacturing, Inc.
- 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.
- Solid State Lamp Using Light Emitting Strips1 Oct 2026US 2026/0298419 A1Quarkstar LLC
- Linear luminaires and devices and methods for connecting linear luminaires1 Oct 2026US 2026/0298422 A1
- Inflatable lighting device1 Oct 2026US 2026/0298437 A1Ztarx Corporation Limited
Most cited
By later US patents
- Illumination components1,698US 6,211,626 B1Color Kinetics Incorporated · 2001
- Multicolored LED lighting method and apparatus1,174US 6,016,038 AColor Kinetics Incorporated · 2000
- Lighting entertainment system987US 6,166,496 AColor Kinetics Incorporated · 2000
- Multicolored LED lighting method and apparatus852US 6,150,774 AColor Kinetics Incorporated · 2000
- Smart light bulb852US 6,528,954 B1Color Kinetics Incorporated · 2003