F21V 23/026
Fastening of transformers or ballasts
Official title: {Fastening of transformers or ballasts}
F21V23/026 (Fastening of transformers or ballasts) appears on 431 US grants and 440 published applications in this corpus.
Search patents in F21V- Granted patents
- 431
- Published applications
- 440
- Assignees
- 229
- Inventors
- 751
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 3 |
| 2002 | 13 | 14 |
| 2003 | 21 | 12 |
| 2004 | 7 | 13 |
| 2005 | 13 | 14 |
| 2006 | 3 | 26 |
| 2007 | 13 | 24 |
| 2008 | 11 | 24 |
| 2009 | 19 | 28 |
| 2010 | 24 | 33 |
| 2011 | 22 | 28 |
| 2012 | 30 | 20 |
| 2013 | 28 | 35 |
| 2014 | 20 | 23 |
| 2015 | 17 | 26 |
| 2016 | 13 | 14 |
| 2017 | 24 | 18 |
| 2018 | 16 | 14 |
| 2019 | 18 | 16 |
| 2020 | 14 | 8 |
| 2021 | 13 | 6 |
| 2022 | 6 | 9 |
| 2023 | 8 | 6 |
| 2024 | 8 | 16 |
| 2025 | 10 | 8 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-directional light assembly18 Aug 2026US 12,710,145 B2Triplelite LLC
- Lens for retrofitting a lighting system with LED lights21 Jul 2026US 12,690,120 B2
- Circuit, circuit board, and heat sink assembly for retrofitting a lighting system with LED lights21 Apr 2026US 12,610,450 B2
- Self-contained ballast driver for retrofitting a lighting system with LED lights31 Mar 2026US 12,593,393 B2
- Downlight and downlight assembly thereof16 Dec 2025US 12,498,109 B2Shenzhen KOK Technology., Ltd
- Extended knuckle, snout, and aiming device for retrofitting a lighting system with led lights26 Mar 2026US 2026/0089832 A1Musco Corporation
- Lens for retrofitting a lighting system with led lights5 Feb 2026US 2026/0036288 A1Musco Corporation
- Led luminaire for retrofitting a lighting system with led lights11 Dec 2025US 2025/0377092 A1Musco Corporation
- T-bar for suspended ceiling with heat dissipation system for led lighting27 Nov 2025US 2025/0362009 A1JLC-Tech IP, LLC
- Alternate junction box and arrangement for lighting apparatus13 Nov 2025US 2025/0347396 A1DMF, Inc.
Most cited
By later US patents
- Recessed lighting fixture208US 5,222,800 AThe Genlyte Group Incorporated · 1993
- Modular ambient lighting system172US 6,979,097 B22005
- Lensed troffer lighting fixture146US 6,210,025 B1NSI Enterprises, Inc. · 2001
- Modular recessed lighting system144US 5,588,737 AThomas Industries, Inc. · 1996
- Modular light fixture with power pack with latching ends133US 7,784,966 B2Orion Energy Systems, Inc. · 2010