H05B 41/2981
For protecting the circuit against abnormal operating conditions
Official title: {for protecting the circuit against abnormal operating conditions}
H05B41/2981 (For protecting the circuit against abnormal operating conditions) appears on 314 US grants and 195 published applications in this corpus.
Search patents in H05B- Granted patents
- 314
- Published applications
- 195
- Assignees
- 129
- Inventors
- 463
- Latest grant
- 5 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 8 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 8 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 12 | 0 |
| 1998 | 15 | 0 |
| 1999 | 15 | 0 |
| 2000 | 14 | 0 |
| 2001 | 18 | 2 |
| 2002 | 8 | 14 |
| 2003 | 16 | 15 |
| 2004 | 13 | 18 |
| 2005 | 6 | 12 |
| 2006 | 7 | 8 |
| 2007 | 7 | 14 |
| 2008 | 16 | 13 |
| 2009 | 9 | 14 |
| 2010 | 11 | 27 |
| 2011 | 16 | 14 |
| 2012 | 20 | 18 |
| 2013 | 17 | 8 |
| 2014 | 11 | 7 |
| 2015 | 7 | 4 |
| 2016 | 5 | 4 |
| 2017 | 2 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Driving circuit of a lamp and method for operating the driving circuit of the lamp5 Dec 2023US 11,839,004 B2Savant Technologies LLC
- LED tube for retrofitting in a fluorescent tube lighting fixture22 Jan 2019US 10,184,617 B2Philips Lighting Holding B. V.
- Electronic ballast with power thermal cutback26 Jun 2018US 10,009,989 B2Philips Lighting Holding B. V.
- 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.
- Driving circuit of a lamp and method for operating the driving circuit of the lamp10 Nov 2022US 2022/0361306 A1Current Lighting Solutions, LLC
- Load-switch voltage control circuit28 May 2020US 2020/0170088 A1
- Dimmable instant-start ballast18 May 2017US 2017/0142794 A1Delta Electronics, Inc.
- Led tube for retrofitting in a fluorescent tube lighting fixture10 Nov 2016US 2016/0327216 A1Philips Lighting Holding B.V.
- Driving device and illumination system14 Jul 2016US 2016/0205755 A1Delta Electronics, Inc.
Most cited
By later US patents
- Resetting an electronic ballast in the event of fault525US 8,004,198 B2Osram Sylvania Inc. · 2011
- Coded communication system and method for controlling an electric lamp185US 5,872,429 APhilips Electronics North America Corporation · 1999
- Electronic ballast with interface circuitry for multiple dimming inputs124US 5,691,605 APhilips Electronics North America Corporation · 1997
- Fluorescent lamp controllers115US 4,952,849 ANorth American Philips Corporation · 1990
- Electronic dimming ballast101US 6,452,344 B1Lutron Electronics Co., Inc. · 2002