H05B 41/285
Arrangements for protecting lamps or circuits against abnormal operating conditions
H05B41/285 (Arrangements for protecting lamps or circuits against abnormal operating conditions) appears on 895 US grants and 579 published applications in this corpus.
Search patents in H05B- Granted patents
- 895
- Published applications
- 579
- Assignees
- 358
- Inventors
- 1,192
- Latest grant
- 7 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 14 | 0 |
| 1988 | 3 | 0 |
| 1989 | 10 | 0 |
| 1990 | 10 | 0 |
| 1991 | 20 | 0 |
| 1992 | 12 | 0 |
| 1993 | 15 | 0 |
| 1994 | 18 | 0 |
| 1995 | 27 | 0 |
| 1996 | 18 | 0 |
| 1997 | 22 | 0 |
| 1998 | 36 | 0 |
| 1999 | 39 | 0 |
| 2000 | 38 | 0 |
| 2001 | 27 | 7 |
| 2002 | 39 | 41 |
| 2003 | 46 | 44 |
| 2004 | 40 | 45 |
| 2005 | 26 | 65 |
| 2006 | 36 | 67 |
| 2007 | 51 | 50 |
| 2008 | 63 | 66 |
| 2009 | 41 | 55 |
| 2010 | 36 | 45 |
| 2011 | 48 | 24 |
| 2012 | 32 | 23 |
| 2013 | 31 | 20 |
| 2014 | 22 | 9 |
| 2015 | 15 | 6 |
| 2016 | 5 | 5 |
| 2017 | 9 | 1 |
| 2018 | 4 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
| 2022 | 2 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Isolated voltage detection with current limiters7 Mar 2023US 11,602,022 B2B/E Aerospace, Inc.
- Error detection on integrated circuit input/output pins11 Oct 2022US 11,467,211 B2Signify Holding B. V.
- Power supply apparatus that outputs voltage supplied to load26 Apr 2022US 11,316,337 B2Canon Kabushiki Kaisha
- Isolated digital control device for LED driver using NFC technology10 Mar 2020US 10,588,205 B1Universal Lighting Technologies, Inc.
- Single stage power converter with power factor correction14 Jan 2020US 10,536,083 B2Dialog Semiconductor GmbH
- Power supply circuit and lamp10 Sep 2026US 2026/0271145 A1Filament Lighting LLC
- Isolated voltage detection with current limiters23 Jun 2022US 2022/0201815 A1Koninklijke Fabriek Inventum B. V.
- Error detection on integrated circuit input/output pins22 Jul 2021US 2021/0223313 A1Signigy Holding B.V.
- Power supply apparatus that outputs voltage supplied to load19 Nov 2020US 2020/0366085 A1Canon Kabushiki Kaisha
- Single-stage power converter with power factor correction21 Mar 2019US 2019/0089256 A1Dialog Semiconductor GmbH
Most cited
By later US patents
- Power/energy management control system331US 6,528,957 B1Lutron Electronics Co., Inc. · 2003
- High efficiency two stage inverter210US 7,218,541 B2Dell Products L. P. · 2007
- DC-AC converter, controller IC therefor, and electronic apparatus utilizing such DC-AC converter180US 7,466,566 B2Rohm Co., Ltd. · 2008
- Circuit for dimming gas discharge lamps without introducing striations179US 5,001,386 ALutron Electronics Co., Inc. · 1991
- DC operated electronic ballast for fluorescent light166US 5,751,120 ASiemens Stromberg-Carlson · 1998