H05B 41/2923
Against abnormal power supply conditions
Official title: {against abnormal power supply conditions}
H05B41/2923 (Against abnormal power supply conditions) appears on 38 US grants and 30 published applications in this corpus.
Search patents in H05B- Granted patents
- 38
- Published applications
- 30
- Assignees
- 27
- Inventors
- 75
- Latest grant
- 26 Apr 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 3 |
| 2003 | 1 | 1 |
| 2004 | 1 | 3 |
| 2005 | 2 | 5 |
| 2006 | 4 | 2 |
| 2007 | 1 | 2 |
| 2008 | 3 | 1 |
| 2009 | 1 | 3 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 2 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Input detection and protection circuit26 Apr 2022US 11,317,490 B2Lumlux Corp.
- Discharge lamp drive device, light source device, projector, and discharge lamp drive method27 Jul 2021US 11,076,457 B2Seiko Epson Corporation
- Discharge lamp drive device, light source device, projector, and discharge lamp drive method6 Aug 2019US 10,375,808 B2Seiko Epson Corporation
- Light device deriving condition of storage circuit6 Nov 2018US 10,123,389 B2Philips Lighting Holding B. V.
- Long life, fail safe traffic light21 Feb 2017US 9,578,728 B2Dialight Corporation
- Input detection an protection circuit an ac electronic ballast for hid lamps15 Jul 2021US 2021/0219397 A1Lumlux Corp.
- Discharge lamp drive device, light source device, projector, and discharge lamp drive method21 Mar 2019US 2019/0090332 A1Seiko Epson Corporation
- Discharge lamp drive device, light source device, projector, and discharge lamp drive method21 Mar 2019US 2019/0090334 A1Seiko Epson Corporation
- Light device deriving condition of storage circuit1 Feb 2018US 2018/0035511 A1Philips Lighting Holding B. V.
- Lighting power supply8 Jan 2015US 2015/0008844 A1Tridonic UK Ltd
Most cited
By later US patents
- Lighting circuit for vehicular discharge lamp54US 5,151,631 AKoito Manufacturing Co., Ltd. · 1992
- Lighting circuit for discharge lamp42US 5,663,613 AKoito Manufacturing Co., Ltd. · 1997
- Lighting circuit for vehicular discharge lamp35US 5,449,973 AKoito Manufacturing Co., Ltd. · 1995
- Solid state ballast for high intensity discharge lamps32US 5,225,742 ADelta Coventry Corporation · 1993
- High voltage discharge lamp apparatus for vehicles31US 6,392,364 B1Denso Corporation · 2002