F21V 19/04
Fastening of light sources or lamp holders: with provision for changing light
Official title: with provision for changing light source, e.g. turret {(auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006)}
F21V19/04 (Fastening of light sources or lamp holders: with provision for changing light) appears on 878 US grants and 700 published applications in this corpus.
Search patents in F21V- Granted patents
- 878
- Published applications
- 700
- Assignees
- 487
- Inventors
- 1,469
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 8 | 0 |
| 1984 | 3 | 0 |
| 1985 | 9 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 15 | 0 |
| 1990 | 9 | 0 |
| 1991 | 12 | 0 |
| 1992 | 14 | 0 |
| 1993 | 9 | 0 |
| 1994 | 13 | 0 |
| 1995 | 16 | 0 |
| 1996 | 22 | 0 |
| 1997 | 8 | 0 |
| 1998 | 24 | 0 |
| 1999 | 16 | 0 |
| 2000 | 21 | 0 |
| 2001 | 25 | 6 |
| 2002 | 25 | 26 |
| 2003 | 25 | 22 |
| 2004 | 18 | 26 |
| 2005 | 21 | 23 |
| 2006 | 28 | 29 |
| 2007 | 17 | 32 |
| 2008 | 20 | 32 |
| 2009 | 25 | 36 |
| 2010 | 21 | 31 |
| 2011 | 27 | 53 |
| 2012 | 31 | 42 |
| 2013 | 42 | 43 |
| 2014 | 28 | 36 |
| 2015 | 27 | 39 |
| 2016 | 30 | 24 |
| 2017 | 27 | 27 |
| 2018 | 31 | 37 |
| 2019 | 29 | 23 |
| 2020 | 29 | 29 |
| 2021 | 21 | 16 |
| 2022 | 24 | 21 |
| 2023 | 15 | 12 |
| 2024 | 18 | 11 |
| 2025 | 19 | 16 |
| 2026 | 13 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Luminaire with replaceable LED board6 Oct 2026US 12,753,907 B2Halco Lighting Technologies, LLC
- Recessed light fixture with LED module removably mounted therein29 Sep 2026US 12,747,853 B2Usai, LLC
- Simple light string18 Aug 2026US 12,710,162 B2Season Bright (Cambodia) Electronic Lighting Co., Ltd
- Modular light devices, systems, and methods11 Aug 2026US 12,702,121 B2ABL Research Group, LLC
- Apparatus, method, and system for providing a continuous spring force on a horizontally and vertically movable device14 Jul 2026US 12,680,678 B2Lucifer Lighting Company
- Modular lighting fixture and modular lighting system1 Oct 2026US 2026/0298450 A1Visual Comfort & Co.
- Quick installation and removal structure for luminaire and luminaire10 Sep 2026US 2026/0266451 A1Dongguan Jiasheng Lighting Technology Co., Ltd.
- Multi-functional Streetlight27 Aug 2026US 2026/0251273 A1
- Linear Light Engine Exchange18 Jun 2026US 2026/0168650 A1
- Simple Light String30 Apr 2026US 2026/0117956 A1Season Bright (Cambodia) Electronic Lighting Co., Ltd
Most cited
By later US patents
- LED illumination apparatus and card-type LED illumination source287US 6,949,772 B2Matsushita Electric Industrial Co., Ltd. · 2005
- Flashlight191US 4,286,311 A1981
- Miniature flashlight189US 4,733,337 ALite Tek International Corp. · 1988
- Variable light beam flashlight and recharging unit184US 4,388,673 AMag Instrument, Inc. · 1983
- Miniature flashlight165US 4,577,263 A1986