H05B 41/2325
Provided with pre-heating electrodes
Official title: {provided with pre-heating electrodes}
H05B41/2325 (Provided with pre-heating electrodes) appears on 81 US grants and 7 published applications in this corpus.
Search patents in H05B- Granted patents
- 81
- Published applications
- 7
- Assignees
- 36
- Inventors
- 96
- Latest grant
- 10 May 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Gas light system and method10 May 2016US 9,338,865 B2
- System and method for ignition and operation of a high intensity discharge lamp28 Jul 2015US 9,095,034 B2Greentek Green Solutions (2009) Ltd.
- Fluorescent lighting system1 May 2012US 8,167,676 B2VAXO Technologies, LLC
- Ultraviolet fluorescent lamp with unique drive circuit4 Jan 2005US 6,838,837 B2
- Fluorescent lamp end-of-life protection circuit7 Dec 2004US 6,828,732 B2Phi Hong Electronics (Shanghai) Co. Ltd.
- Gas Light System and Method6 Nov 2014US 2014/0327370 A1
- System and method for ignition and operation of a high intensity discharge lamp29 May 2014US 2014/0145642 A1Greentek Green Solutions (2009) Ltd.
- UV sterilization system19 Apr 2012US 2012/0093684 A1
- Flourescent lighting system23 Dec 2010US 2010/0320915 A1VAXO Technologies, LLC
- Fluorescent lamp end-of-life protection circuit1 Jul 2004US 2004/0124787 A1Phi Hong Electronics (Shanghai) Co. Ltd.
Most cited
By later US patents
- Power saving fluorescent lamp substitute94US 4,912,371 A1990
- Low pressure gas discharge lamp with increased end illumination57US 4,329,622 AXerox Corporation · 1982
- Ballast circuit for multiple parallel negative impedance loads52US 4,574,222 AGeneral Electric Company · 1986
- Circuit for starting and operating fluorescent lamps37US 4,399,391 AGeneral Electric Company · 1983
- Fluorescent lamp unit having ballast resistor36US 3,996,493 AGeneral Electric Company · 1976