F21S 41/663
By switching light sources
Official title: by switching light sources (by switching incandescent light sources F21S41/162)
F21S41/663 (By switching light sources) appears on 1,106 US grants and 1,284 published applications in this corpus.
Search patents in F21S- Granted patents
- 1,106
- Published applications
- 1,284
- Assignees
- 219
- Inventors
- 1,616
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 5 |
| 2002 | 3 | 2 |
| 2003 | 6 | 3 |
| 2004 | 1 | 16 |
| 2005 | 1 | 10 |
| 2006 | 9 | 11 |
| 2007 | 12 | 14 |
| 2008 | 8 | 21 |
| 2009 | 15 | 16 |
| 2010 | 15 | 10 |
| 2011 | 6 | 23 |
| 2012 | 12 | 23 |
| 2013 | 18 | 44 |
| 2014 | 26 | 50 |
| 2015 | 44 | 85 |
| 2016 | 55 | 74 |
| 2017 | 65 | 87 |
| 2018 | 89 | 120 |
| 2019 | 130 | 106 |
| 2020 | 106 | 70 |
| 2021 | 77 | 78 |
| 2022 | 91 | 93 |
| 2023 | 80 | 83 |
| 2024 | 86 | 107 |
| 2025 | 91 | 77 |
| 2026 | 46 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vehicle lamp6 Oct 2026US 12,753,896 B2SL Corporation
- Motor-vehicle lighting module that produces a cutoff with a reflector the surface of which is partially grained22 Sep 2026US 12,742,531 B2Valeo Vision
- Method and device to derate a light system22 Sep 2026US 12,742,533 B2Valeo Vision
- Wire harness and lighting system1 Sep 2026US 12,723,725 B2Sumitomo Wiring Systems, Ltd.
- Light module for a lighting device of a motor vehicle1 Sep 2026US 12,723,726 B2Valeo Vision
- Adaptive light for a watercraft24 Sep 2026US 2026/0287162 A1Polaris Industries Inc.
- Vehicle headlamp17 Sep 2026US 2026/0274155 A1Koito Manufacturing Co., Ltd.
- Vehicle headlight17 Sep 2026US 2026/0276164 A1Ichikoh Industries, Ltd.
- Micromobility device with integrated light assembly3 Sep 2026US 2026/0257559 A1Also, Inc.
- Headlamp for vehicles3 Sep 2026US 2026/0258927 A1Hella GmbH & Co. KGaA
Most cited
By later US patents
- Multiple light-source illuminating system219US 8,100,552 B22012
- Adaptive/anti-blinding headlights137US 6,144,158 ASensci Corporation · 2000
- Selected direction lighting device131US 6,030,099 A2000
- Vehicle headlight119US 7,150,552 B2DaimlerChrysler AG · 2006
- Vehicular headlamp and optical unit72US 7,073,931 B2Koito Manufacturing Co., Ltd. · 2006