H05B 45/355
Power factor correction [pfc]
Official title: Power factor correction [PFC]; Reactive power compensation
H05B45/355 (Power factor correction [pfc]) appears on 485 US grants and 525 published applications in this corpus.
Search patents in H05B- Granted patents
- 485
- Published applications
- 525
- Assignees
- 242
- Inventors
- 904
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 11 |
| 2006 | 1 | 4 |
| 2007 | 5 | 10 |
| 2008 | 5 | 17 |
| 2009 | 7 | 6 |
| 2010 | 10 | 18 |
| 2011 | 8 | 31 |
| 2012 | 18 | 31 |
| 2013 | 33 | 47 |
| 2014 | 28 | 49 |
| 2015 | 42 | 45 |
| 2016 | 43 | 26 |
| 2017 | 35 | 21 |
| 2018 | 35 | 19 |
| 2019 | 18 | 21 |
| 2020 | 26 | 22 |
| 2021 | 22 | 30 |
| 2022 | 38 | 33 |
| 2023 | 24 | 28 |
| 2024 | 25 | 19 |
| 2025 | 21 | 19 |
| 2026 | 18 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Photoluminescent sign with transient-suppressed LED circuit29 Sep 2026US 12,747,849 B2Ecoglo International Limited
- Multi-channel LED driver with integrated LEDs having a multilayer structure22 Sep 2026US 12,745,329 B2Erp Power, LLC
- Multi-mode dimming and color temperature adjustment power supply based on PWM15 Sep 2026US 12,739,953 B2Zhuhai Shengchang Electronics Co., Ltd.
- Driver arrangement including power factor correction circuitry11 Aug 2026US 12,706,525 B2Signify Holding B. V.
- Single stage buck boost type LED driver30 Jun 2026US 12,672,218 B2Litetronics International, Inc.
- Ripple control of an led driving circuit8 Oct 2026US 2026/0313767 A1Signify Holding B. V.
- An led driving arrangement24 Sep 2026US 2026/0292951 A1Signify Holding B. V.
- New type of phase-cut dimming power supply10 Sep 2026US 2026/0271147 A1Zhuhai Demi Technology Co., Ltd.
- Driver arrangement for powering a load27 Aug 2026US 2026/0255454 A1Signify Holding B. V.
- Ultra-efficient dimmable led driver20 Aug 2026US 2026/0247510 A1Signify Holding B. V.
Most cited
By later US patents
- Lighting methods and systems641US 7,178,941 B2Color Kinetics Incorporated · 2007
- High frequency inverter with power-line-controlled frequency modulation615US 5,404,082 ANorth American Philips Corporation · 1995
- Controlled lighting methods and apparatus528US 7,202,613 B2Color Kinetics Incorporated · 2007
- Power supply for light emitting diode array454US 5,661,645 A1997
- LED power control methods and apparatus433US 7,256,554 B2Color Kinetics Incorporated · 2007