F21K 9/275
Details of bases or housings, i.e. the parts between the light-generating element
Official title: Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings (F21K9/278 takes precedence)
F21K9/275 (Details of bases or housings, i.e. the parts between the light-generating element) appears on 386 US grants and 423 published applications in this corpus.
Search patents in F21K- Granted patents
- 386
- Published applications
- 423
- Assignees
- 131
- Inventors
- 568
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 5 |
| 2009 | 2 | 3 |
| 2010 | 5 | 6 |
| 2011 | 1 | 12 |
| 2012 | 3 | 8 |
| 2013 | 8 | 13 |
| 2014 | 11 | 19 |
| 2015 | 13 | 22 |
| 2016 | 23 | 34 |
| 2017 | 41 | 70 |
| 2018 | 49 | 57 |
| 2019 | 68 | 52 |
| 2020 | 51 | 39 |
| 2021 | 37 | 28 |
| 2022 | 19 | 10 |
| 2023 | 20 | 10 |
| 2024 | 13 | 19 |
| 2025 | 9 | 9 |
| 2026 | 11 | 5 |
By publication year. 2026 runs to 8 Oct.
Recent patents
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- Lighting fixtures having a rotatable illuminable assembly and methods for providing illumination9 Jul 2026US 2026/0194193 A1Wangs Alliance Corporation
- Enhanced contrast face plate system, kit, and method26 Mar 2026US 2026/0085798 A1
- 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
Most cited
By later US patents
- Light tube and power supply circuit300US 7,049,761 B2Altair Engineering, Inc. · 2006
- LED lighting device for replacing fluorescent tubes268US 7,510,299 B2Altair Engineering, Inc. · 2009
- LED lighting unit including elongated heat sink and elongated lens241US 7,815,338 B2Altair Engineering, Inc. · 2010
- Light tube and power supply circuit116US 8,247,985 B2iLumisys, Inc. · 2012
- Light tube and power supply circuit114US 8,382,327 B2iLumisys, Inc. · 2013