H05B 41/2986
Against internal abnormal circuit conditions
Official title: {against internal abnormal circuit conditions}
H05B41/2986 (Against internal abnormal circuit conditions) appears on 46 US grants and 29 published applications in this corpus.
Search patents in H05B- Granted patents
- 46
- Published applications
- 29
- Assignees
- 23
- Inventors
- 72
- Latest grant
- 26 Jan 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 5 |
| 2006 | 2 | 4 |
| 2007 | 3 | 1 |
| 2008 | 2 | 2 |
| 2009 | 2 | 6 |
| 2010 | 4 | 2 |
| 2011 | 5 | 1 |
| 2012 | 3 | 4 |
| 2013 | 3 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Rejecting noise transients while turning off a fluorescent lamp using a starter unit26 Jan 2016US 9,247,628 B2Zilog, Inc.
- Latching circuit for ballast20 May 2014US 8,729,817 B2Osram Sylvania Inc.
- Rejecting noise transients while turning off a fluorescent lamp using a starter unit24 Sep 2013US 8,541,960 B2Zilog, Inc.
- Control system for fluorescent light fixture10 Sep 2013US 8,531,107 B2Marvell World Trade Ltd.
- Method for detection of non-zero-voltage switching operation of a ballast of fluorescent lamps, and ballast19 Feb 2013US 8,378,590 B2Infineon Technologies AG
- Latching circuit for ballast24 Apr 2014US 2014/0111089 A1Osram Sylvania Inc.
- Rejecting Noise Transients While Turning Off a Fluorescent Lamp Using a Starter Unit5 Dec 2013US 2013/0320876 A1Zilog, Inc.
- Control system for fluorescent light fixture14 Jun 2012US 2012/0146551 A1Marvell World Trade Ltd.
- Method for Detection of Non-Zero-Voltage Switching Operation of a Ballast of Fluorescent Lamps, and Ballast15 Mar 2012US 2012/0062137 A1Infineon Technologies AG
- Dimmable compact fluorescent lighting device26 Jan 2012US 2012/0019147 A1
Most cited
By later US patents
- Electronic ballast circuit72US 4,388,562 AAstec Components, Ltd. · 1983
- Zero-voltage switching type electronic ballast for fluorescent lamp65US 5,500,792 ASamsung Electronics Co., Ltd. · 1996
- High frequency electronic ballast for multiple lamp independent operation65US 6,326,740 B1Philips Electronics North America Corporation · 2001
- Switching scheme for power supply having a voltage-fed inverter63US 5,781,418 APhilips Electronics North America Corporation · 1998
- Solid-state fluorescent lamp ballast50US 4,388,563 ACommodore Electronics Limited · 1983