F21S 43/251
The light guides being used to transmit light from remote light sources
Official title: the light guides being used to transmit light from remote light sources
F21S43/251 (The light guides being used to transmit light from remote light sources) appears on 131 US grants and 120 published applications in this corpus.
Search patents in F21S- Granted patents
- 131
- Published applications
- 120
- Assignees
- 69
- Inventors
- 280
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 3 |
| 2006 | 1 | 2 |
| 2007 | 4 | 1 |
| 2008 | 2 | 1 |
| 2009 | 0 | 3 |
| 2010 | 3 | 1 |
| 2011 | 2 | 2 |
| 2012 | 0 | 2 |
| 2013 | 1 | 2 |
| 2014 | 2 | 7 |
| 2015 | 6 | 4 |
| 2016 | 1 | 8 |
| 2017 | 6 | 10 |
| 2018 | 14 | 13 |
| 2019 | 16 | 9 |
| 2020 | 9 | 11 |
| 2021 | 10 | 6 |
| 2022 | 9 | 8 |
| 2023 | 4 | 7 |
| 2024 | 9 | 8 |
| 2025 | 1 | 4 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Vehicle lamp26 Feb 2026US 2026/0055867 A1Stanley Electric Co., Ltd.
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Most cited
By later US patents
- Optical manifold for light-emitting diodes187US 7,286,296 B2Light Prescriptions Innovators, LLC · 2007
- Head lamp assembly and accent lighting therefor159US 8,066,416 B2Federal-Mogul Ignition Company · 2011
- Nonimaging light source129US 5,001,609 AHewlett-Packard Company · 1991
- High efficiency illuminator127US 5,471,371 AFord Motor Company · 1995
- Lighting systems employing optical fibers77US 4,811,172 AGeneral Electric Company · 1989