H05B 41/2983
Against abnormal power supply conditions
Official title: {against abnormal power supply conditions}
H05B41/2983 (Against abnormal power supply conditions) appears on 32 US grants and 20 published applications in this corpus.
Search patents in H05B- Granted patents
- 32
- Published applications
- 20
- Assignees
- 32
- Inventors
- 68
- Latest grant
- 9 May 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 2 | 2 |
| 2009 | 0 | 3 |
| 2010 | 2 | 2 |
| 2011 | 1 | 0 |
| 2012 | 2 | 1 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Dimmable instant-start ballast9 May 2017US 9,648,690 B1Delta Electronics, Inc.
- Driving device and illumination system10 Jan 2017US 9,544,980 B2Delta Electronics, Inc.
- Driver circuit between electromagnetic ballast and led23 Aug 2016US 9,426,861 B2Koninklijke Philips N. V.
- Method for feeding light sources and related device12 May 2015US 9,030,117 B2OSRAM GmbH
- Visible indication of mistaken lamp use9 Jul 2013US 8,482,228 B2Panasonic Corporation
- Load-switch voltage control circuit28 May 2020US 2020/0170088 A1
- Dimmable instant-start ballast18 May 2017US 2017/0142794 A1Delta Electronics, Inc.
- Driving device and illumination system14 Jul 2016US 2016/0205755 A1Delta Electronics, Inc.
- Driver circuit between electromagnetic ballast and led9 Jul 2015US 2015/0195886 A1Koninklijke Philips N. V.
- Lamp unit power supply system19 Feb 2015US 2015/0048756 A1Tridonic UK Ltd
Most cited
By later US patents
- High frequency fluorescent lamp exciter73US 5,030,887 A1991
- Fully integrated ballast IC68US 6,211,623 B1International Rectifier Corporation · 2001
- Lamp circuit with filament current fault monitoring means62US 5,623,184 AGulton Industries, Inc. · 1997
- Power supply for supplying AC output power42US 6,057,652 AMatsushita Electric Works, Ltd. · 2000
- Non zero-voltage switching protection circuit24US 5,973,943 AInternational Rectifier Corporation · 1999