F21S 41/164
Having two or more filaments
Official title: having two or more filaments
F21S41/164 (Having two or more filaments) appears on 69 US grants and 29 published applications in this corpus.
Search patents in F21S- Granted patents
- 69
- Published applications
- 29
- Assignees
- 30
- Inventors
- 140
- Latest grant
- 7 Jul 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 4 |
| 2003 | 4 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 4 |
| 2006 | 2 | 3 |
| 2007 | 4 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 2 | 3 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 4 |
| 2017 | 2 | 1 |
| 2018 | 3 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Auxiliary headlamp assembly for producing a supplemental low beam7 Jul 2020US 10,704,753 B2Valeo North America, Inc.
- Vehicle headlight with two filaments and mounting of such a lamp within a reflector15 Oct 2019US 10,443,804 B2Lumileds LLC
- Vehicle lamp reflector having ventilation channel adjacent lamp capsule4 Sep 2018US 10,066,801 B1Osram Sylvania Inc.
- Double-filament incandescent lamp for automotive vehicle front lighting8 May 2018US 9,966,246 B2Koninklijke Philips N. V.
- Lamp and headlighting arrangement for obtaining a color appearance in an automotive headlight13 Feb 2018US 9,892,906 B2Koninklijke Philips N. V.
- Vehicle headlight with two filaments and mounting of such a lamp within a reflector2 May 2019US 2019/0128493 A1Lumileds LLC
- Auxiliary headlamp assembly for producing a supplemental low beam4 Oct 2018US 2018/0283645 A1Valeo North America, Inc.
- Dimming cap for a lamp with two separate radiation sources28 Jun 2018US 2018/0180237 A1Lumileds Holding B. V.
- Headlamp assembly26 Jan 2017US 2017/0023200 A1Ford Global Technologies, LLC
- Vibration resistant automotive front lighting lamp4 Aug 2016US 2016/0225605 A1Koninklijke Philips N. V.
Most cited
By later US patents
- Motor vehicle headlamp33US 5,172,972 AKoito Manufacturing Co., Ltd. · 1992
- Vehicle headlamp28US 4,506,315 AIchikoh Industries, Ltd. · 1985
- Vehicular headlamp28US 4,914,747 AKoito Seisakusho Co., Ltd. · 1990
- Vehicle headlight26US 5,954,428 AHella KG Hueck & Co. · 1999
- Automotive projector type headlight24US 5,055,981 AKoito Manufacturing Co., Ltd. · 1991