H05B 41/2988
For protecting the lamp against abnormal operating conditions
Official title: {for protecting the lamp against abnormal operating conditions}
H05B41/2988 (For protecting the lamp against abnormal operating conditions) appears on 103 US grants and 63 published applications in this corpus.
Search patents in H05B- Granted patents
- 103
- Published applications
- 63
- Assignees
- 66
- Inventors
- 200
- Latest grant
- 17 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 3 |
| 2003 | 7 | 10 |
| 2004 | 7 | 5 |
| 2005 | 5 | 4 |
| 2006 | 4 | 9 |
| 2007 | 4 | 4 |
| 2008 | 7 | 5 |
| 2009 | 2 | 5 |
| 2010 | 2 | 5 |
| 2011 | 5 | 2 |
| 2012 | 1 | 1 |
| 2013 | 3 | 2 |
| 2014 | 3 | 3 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 3 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Energy harvesting dual purpose monitoring temperature as a PHM sensor17 Dec 2024US 12,168,077 B2Goodrich Corporation
- 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.
- Control algorithm for an electronic dimming ballast of a UV lamp27 Nov 2018US 10,143,073 B2Xylem IP Management S.à R.L.
- Starting device for a CDM lamp and starting method for the same21 Aug 2018US 10,057,969 B2Guangzhou Triz Information Technology Ltd.
- Electronic circuit for protecting a load against over-voltage13 Feb 2018US 9,893,510 B2Telefonaktiebolaget LM Ericsson (publ)
- 222 nm excimer bulb for uv light disinfection: energy harvesting dual purpose monitoring temperature as a phm sensor1 Dec 2022US 2022/0378958 A1Goodrich Corporation
- 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
- Electronic circuit for protecting a load against over-voltage12 Nov 2015US 2015/0326005 A1Telefonaktiebolaget'l M Ericsson (Publ)
- Ballast with anti-striation circuit18 Dec 2014US 2014/0368120 A1Osram Sylvania Inc.
Most cited
By later US patents
- 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
- Reduction of effects of beat frequencies in systems with multiple oscillators51US 4,939,423 AHoneywell Inc. · 1990
- Ballast circuit for fluorescent lamps49US 5,821,699 APacific Scientific Company · 1998
- EBL having a feedback circuit and a method for ensuring low temperature lamp operation at low dimming levels45US 5,850,127 APhilips Electronics North America Corporation · 1998