F21S 43/235
Light guides
F21S43/235 (Light guides) appears on 1,398 US grants and 1,532 published applications in this corpus.
Search patents in F21S- Granted patents
- 1,398
- Published applications
- 1,532
- Assignees
- 374
- Inventors
- 2,472
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 12 | 0 |
| 1999 | 4 | 0 |
| 2000 | 10 | 0 |
| 2001 | 6 | 4 |
| 2002 | 7 | 8 |
| 2003 | 15 | 14 |
| 2004 | 11 | 25 |
| 2005 | 17 | 20 |
| 2006 | 15 | 21 |
| 2007 | 12 | 20 |
| 2008 | 23 | 26 |
| 2009 | 13 | 21 |
| 2010 | 16 | 22 |
| 2011 | 14 | 29 |
| 2012 | 10 | 38 |
| 2013 | 26 | 41 |
| 2014 | 33 | 77 |
| 2015 | 43 | 84 |
| 2016 | 54 | 102 |
| 2017 | 83 | 114 |
| 2018 | 109 | 117 |
| 2019 | 161 | 121 |
| 2020 | 127 | 100 |
| 2021 | 91 | 72 |
| 2022 | 91 | 96 |
| 2023 | 86 | 88 |
| 2024 | 105 | 110 |
| 2025 | 106 | 86 |
| 2026 | 54 | 76 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F21S 43/236Characterised by the shape of the light guide1,198
- F21S 43/242Characterised by the emission area1,046
- F21S 43/249With two or more light sources being coupled into the light guide587
- F21S 43/247With a single light source being coupled into the light guide381
- F21S 43/252Two or more successive light guides166
- F21S 43/251The light guides being used to transmit light from remote light sources131
- F21S 43/253Two or more juxtaposed light guides94
Recent patents
- Vehicle lamp29 Sep 2026US 12,747,844 B2Stanley Electric Co., Ltd.
- Optical component, lighting device, and motor vehicle22 Sep 2026US 12,742,534 B2Valeo Vision
- Vehicle lamp8 Sep 2026US 12,729,823 B2Stanley Electric Co., Ltd.
- Vehicle lamp8 Sep 2026US 12,729,824 B2Nichia Corporation
- Lighting device for a motor vehicle8 Sep 2026US 12,729,826 B2Hella GmbH & Co. KGaA
- Vehicle lamp and light guide body8 Oct 2026US 2026/0309298 A1Stanley Electric Co., Ltd.
- Vehicle lamp1 Oct 2026US 2026/0298434 A1Stanley Electric Co., Ltd.
- Arrangement of optical components for a lighting device for a motor vehicle and a lighting device for the tail section of a motor vehicle1 Oct 2026US 2026/0298435 A1Hella GmbH & Co. KGaA
- Lighting device for vehicles1 Oct 2026US 2026/0298436 A1Hella GmbH & Co. KGaA
- Lighting device and vehicle lamp comprising same24 Sep 2026US 2026/0287139 A1LG Innotek Co., Ltd.
Most cited
By later US patents
- Illuminator assembly incorporating light emitting diodes881US 5,803,579 AGentex Corporation · 1998
- Led assembly631US 6,132,072 AGentex Corporation · 2000
- Illuminating device487US 5,136,483 A1992
- Systems and components for enhancing rear vision from a vehicle419US 6,550,949 B1Gentex Corporation · 2003
- Lighting unit351US 5,375,043 AInoue Denki Co., Inc. · 1994