F21W 2131/101
Of tunnels or the like
Official title: of tunnels or the like, e.g. under bridges
F21W2131/101 (Of tunnels or the like) appears on 64 US grants and 84 published applications in this corpus.
Search patents in F21W- Granted patents
- 64
- Published applications
- 84
- Assignees
- 59
- Inventors
- 176
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 3 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 2 | 5 |
| 2011 | 3 | 9 |
| 2012 | 6 | 6 |
| 2013 | 7 | 2 |
| 2014 | 0 | 4 |
| 2015 | 3 | 7 |
| 2016 | 4 | 3 |
| 2017 | 3 | 6 |
| 2018 | 5 | 5 |
| 2019 | 4 | 4 |
| 2020 | 2 | 5 |
| 2021 | 5 | 4 |
| 2022 | 3 | 4 |
| 2023 | 5 | 4 |
| 2024 | 3 | 2 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lighting system8 Sep 2026US 12,729,820 B2Panasonic Intellectual Property Management Co., Ltd.
- Luminaire element for an inspection tunnel, luminaire strip, and inspection tunnel21 Oct 2025US 12,449,372 B2Dürr Systems AG
- Method for assembling optical modules of a luminaire and optical assembly26 Nov 2024US 12,152,761 B2Schreder S.A.
- Modular LED luminaire assemblies with separate mechanical and electrical connecting elements23 Jul 2024US 12,044,370 B2Schreder S.A.
- Low current self-illuminated power cable which retains flexibility, and method of manufacturing same4 Jun 2024US 12,000,579 B2Nexans
- Lighting system16 Jul 2026US 2026/0202024 A1Panasonic Intellectual Property Management Co., Ltd.
- Method for assembling optical modules of a luminaire and optical assembly13 Feb 2025US 2025/0052403 A1Schreder S.A.
- Light-emitting device, lamp, and lighting fixture22 Aug 2024US 2024/0279541 A1Nichia Corporation
- Luminaire assemblies for tunnels and the like22 Aug 2024US 2024/0280246 A1
- Method for measuring parameters of roadway low-position lighting fixtures9 Nov 2023US 2023/0358634 A1Beijing University of Technology
Most cited
By later US patents
- Modular lighting systems209US 8,232,745 B2Digital Lumens Incorporated · 2012
- Lighting device168US 7,722,220 B2Cree LED Lighting Solutions, Inc. · 2010
- LED lamp46US 8,317,363 B2Foxconn Technology Co., Ltd. · 2012
- LED lighting fixtures with enhanced heat dissipation45US 8,167,468 B1Deepsea Power & Light, Inc. · 2012
- Lighting fixture35US 4,580,200 AITT Industries, Inc. · 1986