H05B 45/31
Phase-control circuits
H05B45/31 (Phase-control circuits) appears on 406 US grants and 446 published applications in this corpus.
Search patents in H05B- Granted patents
- 406
- Published applications
- 446
- Assignees
- 207
- Inventors
- 675
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 8 |
| 2010 | 2 | 9 |
| 2011 | 7 | 13 |
| 2012 | 9 | 19 |
| 2013 | 19 | 21 |
| 2014 | 14 | 40 |
| 2015 | 31 | 27 |
| 2016 | 30 | 29 |
| 2017 | 43 | 43 |
| 2018 | 35 | 26 |
| 2019 | 33 | 40 |
| 2020 | 37 | 29 |
| 2021 | 25 | 30 |
| 2022 | 31 | 27 |
| 2023 | 27 | 20 |
| 2024 | 21 | 20 |
| 2025 | 20 | 22 |
| 2026 | 12 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Load control device for high-efficiency loads29 Sep 2026US 12,750,930 B2Lutron Technology Company LLC
- Lighting controller with noise and signal isolation22 Sep 2026US 12,745,336 B2UnitX, Inc.
- Systems and methods for dimming control related to TRIAC dimmers associated with LED lighting25 Aug 2026US 12,720,651 B2On-Bright Electronics (Shanghai) Co., Ltd.
- Light driver capable of deactivating CCT control in the presence of TRIAC dimming11 Aug 2026US 12,707,541 B2Erp Power, LLC
- Two-wire dimmer with improved zero-cross detention14 Jul 2026US 12,684,663 B2Lutron Technology Company LLC
- New type of phase-cut dimming power supply10 Sep 2026US 2026/0271147 A1Zhuhai Demi Technology Co., Ltd.
- Multi-Spectral Integrated Cob Light Source and Control System Thereof3 Sep 2026US 2026/0262147 A1Foshan Cicada Dental Instrument Co., Ltd.
- Lighting apparatus20 Aug 2026US 2026/0247505 A1Leedarson Lighting Co., Ltd.
- Automatic switching circuit with enhanced phase-cut compatibility13 Aug 2026US 2026/0239505 A1Zhuhai Demi Technology Co., Ltd.
- Multifunctional new phase-cut control circuit and its implementation method2 Jul 2026US 2026/0190192 A1Zhuhai Demi Technology Co., Ltd.
Most cited
By later US patents
- Microprocessor based simulated electronic flame422US 5,924,784 A1999
- Dimmer circuit for LED197US 7,102,902 B1Ledtronics, Inc. · 2006
- Solid state lighting device using heat channels in a housing117US 8,282,250 B1eLumigen LLC · 2012
- System and method for selectively dimming an LED111US 7,649,327 B2Permlight Products, Inc. · 2010
- Lighting control device for controlling dimming, lighting device including a control device, and method of controlling lighting109US 8,115,419 B2Cree, Inc. · 2012