H05B 41/044
For lamp provided with pre-heating electrodes
Official title: {for lamp provided with pre-heating electrodes}
H05B41/044 (For lamp provided with pre-heating electrodes) appears on 122 US grants and 15 published applications in this corpus.
Search patents in H05B- Granted patents
- 122
- Published applications
- 15
- Assignees
- 54
- Inventors
- 160
- Latest grant
- 30 Aug 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 10 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 5 |
| 2012 | 0 | 1 |
| 2013 | 4 | 3 |
| 2014 | 2 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Dimming a multi-lamp fluorescent light fixture by turning off an individual lamp using a wireless fluorescent lamp starter30 Aug 2016US 9,433,067 B2IXYS Intl Limited
- Method and device for driving a gas discharge lamp25 Nov 2014US 8,896,237 B2Koninklijke Philips N. V.
- Low-power wireless network beacon for turning off and on fluorescent lamps18 Feb 2014US 8,653,935 B2IXYS CH GmbH
- Lighting fixture and method for operating same27 Aug 2013US 8,519,643 B2
- Alternating turn off timing of a fluorescent lamp starter unit11 Jun 2013US 8,461,779 B2Zilog, Inc.
- Circuit and method for preheating filaments and ballast11 Jul 2013US 2013/0175945 A1OSRAM GmbH
- Alternating Turn Off Timing Of A Fluorescent Lamp Starter Unit18 Apr 2013US 2013/0093347 A1Zilog, Inc.
- Method and device for driving a gas discharge lamp10 Jan 2013US 2013/0009562 A1Koninklijke Philips Electronics N. V.
- Start auxiliary device, ballast and illumination device4 Oct 2012US 2012/0248996 A1OSRAM GmbH
- Electro magnetic ballast for a gas discharge lamp29 Dec 2011US 2011/0316434 A1Koninklijke Philips Electronics N. V.
Most cited
By later US patents
- Dimming controller for a fluorescent lamp95US 5,504,398 ABeacon Light Products, Inc. · 1996
- Automatic state tranition controller for a fluorescent lamp47US 5,652,481 ABeacon Light Products, Inc. · 1997
- Fluorescent lamp circuit41US 4,559,478 AU-Lite, Inc. · 1985
- Circuit for starting and operating fluorescent lamps37US 4,399,391 AGeneral Electric Company · 1983
- Voltage-comparator, solid-state, current-switch starter for fluorescent lamp30US 5,537,010 ABeacon Light Products, Inc. · 1996