H05B 41/2858
For protecting the lamp against abnormal operating conditions
Official title: {for protecting the lamp against abnormal operating conditions}
H05B41/2858 (For protecting the lamp against abnormal operating conditions) appears on 92 US grants and 66 published applications in this corpus.
Search patents in H05B- Granted patents
- 92
- Published applications
- 66
- Assignees
- 70
- Inventors
- 196
- Latest grant
- 13 Feb 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 3 |
| 2003 | 5 | 4 |
| 2004 | 4 | 4 |
| 2005 | 2 | 6 |
| 2006 | 1 | 10 |
| 2007 | 5 | 7 |
| 2008 | 6 | 8 |
| 2009 | 5 | 4 |
| 2010 | 8 | 4 |
| 2011 | 5 | 2 |
| 2012 | 0 | 4 |
| 2013 | 7 | 7 |
| 2014 | 4 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 0 |
| 2018 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electronic circuit for protecting a load against over-voltage13 Feb 2018US 9,893,510 B2Telefonaktiebolaget LM Ericsson (publ)
- Enhanced variable control, current sensing drivers with zeta scan10 Oct 2017US 9,788,402 B2Luxor Scientific, Inc
- Light source apparatus, discharge lamp driving method, and projector2 May 2017US 9,642,229 B2Seiko Epson Corporation
- Method to detect uneven AC load or parallel load removal25 Oct 2016US 9,480,126 B1Universal Lighting Technologies, Inc.
- Discharge-lamp lighting device21 Oct 2014US 8,866,405 B2Eye Lighting Systems Corporation
- Enhanced variable control, current sensing drivers29 Sep 2016US 2016/0286635 A1Green Clean Scientific, Inc.
- Electronic circuit for protecting a load against over-voltage12 Nov 2015US 2015/0326005 A1Telefonaktiebolaget'l M Ericsson (Publ)
- Light source apparatus, discharge lamp driving method, and projector14 Aug 2014US 2014/0226135 A1Seiko Epson Corporation
- Dynamic Ultraviolet Lamp Ballast System21 Nov 2013US 2013/0309131 A1Hayward Industries, Inc.
- Cold Cathode Fluorescent Lamp Illumination Device with Protection Mechanism4 Jul 2013US 2013/0169161 A1Wei Power Technology Co., Ltd.
Most cited
By later US patents
- Circuit for dimming gas discharge lamps without introducing striations179US 5,001,386 ALutron Electronics Co., Inc. · 1991
- Circuit and method for improved dimming of gas discharge lamps93US 5,041,763 ALutron Electronics Co., Inc. · 1991
- Optical and temperature feedbacks to control display brightness74US 7,183,727 B2Microsemi Corporation · 2007
- Display device and driving device for a light source65US 7,595,785 B2Samsung Electronics Co., Ltd. · 2009
- Variable chopped input dimmable electronic ballast53US 5,192,896 A1993