F21W 2121/04
Use or application of lighting devices or systems for decorative purposes, not
Official title: for Christmas trees
F21W2121/04 (Use or application of lighting devices or systems for decorative purposes, not) appears on 404 US grants and 352 published applications in this corpus.
Search patents in F21W- Granted patents
- 404
- Published applications
- 352
- Assignees
- 114
- Inventors
- 373
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 2 |
| 2002 | 10 | 7 |
| 2003 | 3 | 5 |
| 2004 | 6 | 9 |
| 2005 | 5 | 10 |
| 2006 | 7 | 9 |
| 2007 | 6 | 15 |
| 2008 | 8 | 9 |
| 2009 | 4 | 7 |
| 2010 | 3 | 7 |
| 2011 | 10 | 10 |
| 2012 | 4 | 8 |
| 2013 | 8 | 13 |
| 2014 | 7 | 7 |
| 2015 | 15 | 27 |
| 2016 | 15 | 21 |
| 2017 | 19 | 25 |
| 2018 | 22 | 19 |
| 2019 | 35 | 24 |
| 2020 | 29 | 23 |
| 2021 | 31 | 21 |
| 2022 | 23 | 19 |
| 2023 | 14 | 16 |
| 2024 | 20 | 15 |
| 2025 | 20 | 17 |
| 2026 | 10 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lightweight combined decorative tree with variable light effects1 Sep 2026US 12,721,463 B1Shangyou Jiayi Lighting Product Co., Ltd.
- Electrical and mechanical coupling systems for artificial powered trees and associated methods18 Aug 2026US 12,712,307 B2Belgravia Wood Limited
- Decorative Christmas tree with light and shadow conversion16 Jun 2026US 12,655,966 B1Shangyou Jiayi Lighting Product Co., Ltd.
- LED light string controller, LED light string and artificial Christmas tree16 Jun 2026US 12,655,968 B2Winners Group Industries Company Limited
- Smart christmas tree with self-adaptive lighting24 Mar 2026US 12,588,127 B2Winner Industry Company Limited
- Decorative lighting assembly and system for vertical structures, such as lamp posts, poles and trees10 Sep 2026US 2026/0266435 A1
- Hanging scroll christmas tree with kit for ornamentation and lighting25 Jun 2026US 2026/0174263 A1Playing With Awareness LLC
- Water-resistant wired electro-magnetic component capture30 Apr 2026US 2026/0117963 A1Foot-Candle, LLC
- Mechanical/electrical connector12 Mar 2026US 2026/0074463 A1Holiday Designs, LLC
- Led light string controller, led light string and artificial christmas tree5 Mar 2026US 2026/0063287 A1Winners Group Industries Company Limited
Most cited
By later US patents
- Lighting methods and systems641US 7,178,941 B2Color Kinetics Incorporated · 2007
- Christmas-tree, decorative, artistic and ornamental object illumination apparatus177US 5,034,658 A1991
- Lighting methods and systems134US 8,207,821 B2Philips Solid-State Lighting Solutions, Inc. · 2012
- Omnidirectional lighting device128US 6,568,834 B1Goeken Group Corp. · 2003
- Jacketed LED assemblies and light strings containing same116US 7,066,628 B2Fiber Optic Designs, Inc. · 2006