H05B 41/46
Circuits providing for substitution in case of failure of the lamp
H05B41/46 (Circuits providing for substitution in case of failure of the lamp) appears on 81 US grants and 42 published applications in this corpus.
Search patents in H05B- Granted patents
- 81
- Published applications
- 42
- Assignees
- 45
- Inventors
- 139
- Latest grant
- 12 Mar 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 5 |
| 2003 | 3 | 2 |
| 2004 | 3 | 5 |
| 2005 | 1 | 4 |
| 2006 | 6 | 2 |
| 2007 | 2 | 5 |
| 2008 | 3 | 3 |
| 2009 | 1 | 3 |
| 2010 | 5 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 6 |
| 2014 | 2 | 0 |
| 2015 | 3 | 2 |
| 2016 | 2 | 2 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus and method for switch state detection and controlling electrical power12 Mar 2019US 10,230,262 B2Capstone Lighting Technologies, LLC
- Emergency lighting devices with LED strings16 Jan 2018US 9,871,404 B2Cree, Inc.
- Apparatus and method for switch state detection and controlling electrical power28 Mar 2017US 9,608,479 B2Capstone Lighting Technologies, LLC
- Apparatus and method for switch state detection and controlling electrical power23 Aug 2016US 9,425,649 B2Capstone Lighting Technologies, LLC
- Low power bypass circuit for LED open circuit and reverse polarity protection5 Apr 2016US 9,307,610 B2General LED, Inc.
- Apparatus and method for switch state detection and controlling electrical power10 Nov 2016US 2016/0329742 A1Capstone Lighting Technologies, LLC
- Apparatus and method for switch state detection and controlling electrical power10 Nov 2016US 2016/0329743 A1Capstone Lighting Technologies, LLC
- Low Power Bypass Circuit for LED Open Circuit and Reverse Polarity Protection29 Oct 2015US 2015/0312976 A1General LED, Inc.
- Apparatus and method for switch state detection and controlling electrical power9 Jul 2015US 2015/0194843 A1Capstone Lighting Technologies, LLC
- Light Emitting Diodes Driven by High Intensity Discharge Ballast12 Sep 2013US 2013/0234596 A1Metrolight Ltd.
Most cited
By later US patents
- Fluorescent lamp insert with conductive rod support89US 4,107,581 A1978
- Operating circuit for high-pressure discharge lamps with an ignition-time bridging function63US 5,917,287 APatent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH · 1999
- Lighting unit39US 4,350,930 AGeneral Electric Company · 1982
- Circuit for selective individual operation of multiple arc discharge lamps33US 4,238,711 AGeneral Electric Company · 1980
- Direct current power source for an electric discharge lamp33US 4,358,717 AQuietlite International, Ltd. · 1982