F21S 41/162
Incandescent light sources
Official title: Incandescent light sources, e.g. filament or halogen lamps
F21S41/162 (Incandescent light sources) appears on 250 US grants and 154 published applications in this corpus.
Search patents in F21S- Granted patents
- 250
- Published applications
- 154
- Assignees
- 90
- Inventors
- 380
- Latest grant
- 15 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 7 | 0 |
| 1987 | 11 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 11 | 0 |
| 1991 | 9 | 0 |
| 1992 | 10 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 10 |
| 2002 | 13 | 12 |
| 2003 | 14 | 6 |
| 2004 | 6 | 10 |
| 2005 | 4 | 10 |
| 2006 | 7 | 12 |
| 2007 | 11 | 12 |
| 2008 | 9 | 2 |
| 2009 | 9 | 5 |
| 2010 | 4 | 8 |
| 2011 | 0 | 3 |
| 2012 | 3 | 6 |
| 2013 | 7 | 4 |
| 2014 | 5 | 3 |
| 2015 | 6 | 6 |
| 2016 | 1 | 9 |
| 2017 | 9 | 18 |
| 2018 | 12 | 8 |
| 2019 | 10 | 4 |
| 2020 | 2 | 0 |
| 2021 | 4 | 6 |
| 2022 | 2 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Combined radar and lighting unit and laser radar apparatus15 Aug 2023US 11,724,636 B2Denso Corporation
- Retrofit lighting device with improved thermal properties22 Mar 2022US 11,280,469 B2Lumileds LLC
- Lighting device having semiconductor light source and at least one incandescent filament1 Mar 2022US 11,262,029 B2OSRAM Beteiligungsverwaltung GmbH
- Light emitting device7 Dec 2021US 11,193,648 B2Lumileds LLC
- Truck headlight circuit17 Aug 2021US 11,091,095 B2Yourtruckshop Inc.
- Retrofit lighting device with improved thermal properties11 Nov 2021US 2021/0348738 A1Lumileds LLC
- Lighting device having at least one semiconductor light source14 Oct 2021US 2021/0317955 A1OSRAM Beteiligungsverwaltung GmbH
- Combined radar and lighting unit and laser radar apparatus26 Aug 2021US 2021/0261044 A1Denso Corporation
- Vehicle Headlight Device Having An Ejectable And Replaceable Lightbulb Assembly26 Aug 2021US 2021/0262631 A1
- Vehicle Headlight Device Having An Ejectable And Replaceable Lightbulb Assembly13 May 2021US 2021/0140600 A1
Most cited
By later US patents
- Headlamp control to prevent glare143US 6,861,809 B2Gentex Corporation · 2005
- Variable distribution type automotive headlamp54US 5,060,120 AKoito Manufacturing Co., Ltd. · 1991
- Motor vehicle lighting system50US 4,569,002 AGTE Products Corporation · 1986
- Motor vehicle lighting system including a sealed lens member as part thereof43US 4,646,207 AGTE Products Corporation · 1987
- Light transmitting system for automobile headlamp37US 4,432,039 ACibie Projecteurs · 1984