H05B 47/26
Circuit arrangements for protecting against earth faults
H05B47/26 (Circuit arrangements for protecting against earth faults) appears on 145 US grants and 146 published applications in this corpus.
Search patents in H05B- Granted patents
- 145
- Published applications
- 146
- Assignees
- 81
- Inventors
- 276
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 3 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 6 |
| 2012 | 3 | 8 |
| 2013 | 3 | 6 |
| 2014 | 10 | 7 |
| 2015 | 6 | 11 |
| 2016 | 14 | 8 |
| 2017 | 14 | 15 |
| 2018 | 13 | 13 |
| 2019 | 17 | 16 |
| 2020 | 12 | 6 |
| 2021 | 12 | 13 |
| 2022 | 15 | 16 |
| 2023 | 9 | 7 |
| 2024 | 10 | 2 |
| 2025 | 1 | 5 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Light-emitting diode driving circuit7 Jul 2026US 12,677,365 B2PowerX Semiconductor Corporation
- Retrofit LED tube with safety switch8 Jul 2025US 12,352,420 B2Signify Holding B. V.
- Systems and methods for monitoring light emissions of electronic devices13 Aug 2024US 12,062,307 B2Rovi Guides, Inc.
- Tubular LED lamp and a circuit used for the lamp13 Aug 2024US 12,063,727 B2Signify Holding B. V.
- Tubular device for fitting to a tubular light fitting9 Jul 2024US 12,031,689 B2Signify Holding B. V.
- Leakage protection circuit7 May 2026US 2026/0129731 A1Foshan Electrical and Lighting Co., Ltd
- Illumination driver circuit compatible with electronic ballast and mains supply, and illumination device25 Sep 2025US 2025/0301545 A1Joulwatt Technology Co., Ltd.
- Light-emitting diode driving circuit3 Jul 2025US 2025/0220793 A1PowerX Semiconductor Corporation
- Led module with isolation fault detection1 May 2025US 2025/0142702 A1Tridonic GmbH & Co KG
- Power distribution13 Mar 2025US 2025/0087989 A1LSC Control Systems Pty Ltd
Most cited
By later US patents
- Linear solid-state lighting with a double safety mechanism free of shock hazard67US 8,322,878 B2Lightel Technologies, Inc. · 2012
- Linear solid-state lighting with a wide range of input voltage and frequency free of fire and shock hazards56US 9,288,867 B2Lightel Technologies, Inc. · 2016
- Linear solid-state lighting with voltage sensing mechanism free of fire and shock hazards50US 8,749,167 B2Lightel Technologies, Inc. · 2014
- Linear solid-state lighting with shock protection switches49US 8,147,091 B2Lightel Technologies, Inc. · 2012
- Linear solid-state lighting with degenerate voltage sensing free of fire and shock hazards35US 9,163,818 B2Lightel Technologies, Inc. · 2015