H05B 41/231
For high-pressure lamps
Official title: for high-pressure lamps
H05B41/231 (For high-pressure lamps) appears on 33 US grants and 7 published applications in this corpus.
Search patents in H05B- Granted patents
- 33
- Published applications
- 7
- Assignees
- 25
- Inventors
- 49
- Latest grant
- 19 Jul 2011
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 3 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus and system for adjusting power to HID lamp to control level of light output and conserve energy (ballast multi-tap power output)19 Jul 2011US 7,982,404 B2Musco Corporation
- Fused lead wire for ballast protection15 Feb 2011US 7,889,463 B1Universal Lighting Technologies, Inc.
- Voltage control load center, modular voltage control transformer circuit, and method of making and using2 Nov 2010US 7,825,614 B2
- Step sinusoidal voltage controlling method for hid, flourescent and incandescent light dimming applications6 Nov 2007US 7,291,986 B2Power Control Technologies, Inc.
- Method of regulating power in a high-intensity-discharge lamp28 Sep 2004US 6,798,153 B2Koninklijke Philips Electronics N. V.
- Circuit arrangement and method for adapting the output of high-pressure discharge lamps29 Apr 2010US 2010/0102749 A1Osram Gesellschaft Mit Beschraenkter Haftung
- Method and apparatus and system for adjusting power to hid lamp to control level of light output and conserve energy (ballast multi-tap power output)26 Jun 2008US 2008/0150451 A1Musco Corporation
- Voltage control load center, modular voltage control transformer circuit, and method of making and using27 Sep 2007US 2007/0224905 A1Active ES Lighting Contorls, Inc.
- Step sinusoidal voltage controlling method for hid, flourescent and incandescent light dimming applications26 Apr 2007US 2007/0090770 A1Power Control Technologies, Inc.
- Method of regulating power in a high-intensity-discharge lamp6 Feb 2003US 2003/0025463 A1Koninklijke Philips Electronics N. V.
Most cited
By later US patents
- High intensity discharge lamp magnetic/electronic ballast27US 6,577,075 B22003
- Ballast circuit for high intensity discharge (HID) lamps15US 4,199,710 AGTE Sylvania Incorporated · 1980
- High pressure discharge lamp apparatus15US 4,370,601 AMatsushita Electric Industrial Co., Ltd. · 1983
- Method of regulating power in a high-intensity-discharge lamp13US 6,798,153 B2Koninklijke Philips Electronics N. V. · 2004
- Electric discharge lamp control circuit having a temperature dependent capacitor12US 4,134,042 AU. S. Philips Corporation · 1979