H05B 41/298
Arrangements for protecting lamps or circuits against abnormal operating conditions
H05B41/298 (Arrangements for protecting lamps or circuits against abnormal operating conditions) appears on 418 US grants and 259 published applications in this corpus.
Search patents in H05B- Granted patents
- 418
- Published applications
- 259
- Assignees
- 170
- Inventors
- 613
- Latest grant
- 17 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 10 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 10 | 0 |
| 1991 | 12 | 0 |
| 1992 | 11 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 15 | 0 |
| 1997 | 12 | 0 |
| 1998 | 20 | 0 |
| 1999 | 20 | 0 |
| 2000 | 17 | 0 |
| 2001 | 20 | 3 |
| 2002 | 9 | 16 |
| 2003 | 21 | 23 |
| 2004 | 20 | 23 |
| 2005 | 11 | 16 |
| 2006 | 12 | 16 |
| 2007 | 11 | 20 |
| 2008 | 23 | 17 |
| 2009 | 11 | 21 |
| 2010 | 13 | 31 |
| 2011 | 20 | 18 |
| 2012 | 22 | 19 |
| 2013 | 21 | 11 |
| 2014 | 13 | 10 |
| 2015 | 9 | 5 |
| 2016 | 5 | 4 |
| 2017 | 2 | 2 |
| 2018 | 4 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Energy harvesting dual purpose monitoring temperature as a PHM sensor17 Dec 2024US 12,168,077 B2Goodrich Corporation
- Driving circuit of a lamp and method for operating the driving circuit of the lamp5 Dec 2023US 11,839,004 B2Savant Technologies LLC
- Light tube with anti-electric shock protection function and capable of being supplied with electricity by electrical ballast and alternate-current power supply in working frequency14 Sep 2021US 11,122,671 B1Xiamen PVTECH Co., Ltd.
- LED tube for retrofitting in a fluorescent tube lighting fixture22 Jan 2019US 10,184,617 B2Philips Lighting Holding B. V.
- Control algorithm for an electronic dimming ballast of a UV lamp27 Nov 2018US 10,143,073 B2Xylem IP Management S.à R.L.
- 222 nm excimer bulb for uv light disinfection: energy harvesting dual purpose monitoring temperature as a phm sensor1 Dec 2022US 2022/0378958 A1Goodrich Corporation
- 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
- Control algorithm for an electronic dimming ballast of a uv lamp15 Mar 2018US 2018/0077784 A1Xylem IP Management S.à r.I.
- Starting device for a cdm lamp and starting method for the same27 Jul 2017US 2017/0215263 A1
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