H05B 41/2821
By means of a single-switch converter or a parallel push-pull converter in
Official title: {by means of a single-switch converter or a parallel push-pull converter in the final stage (H05B41/285 takes precedence)}
H05B41/2821 (By means of a single-switch converter or a parallel push-pull converter in) appears on 657 US grants and 528 published applications in this corpus.
Search patents in H05B- Granted patents
- 657
- Published applications
- 528
- Assignees
- 286
- Inventors
- 969
- Latest grant
- 27 Oct 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 8 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 14 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 16 | 0 |
| 1999 | 11 | 0 |
| 2000 | 37 | 0 |
| 2001 | 35 | 4 |
| 2002 | 25 | 26 |
| 2003 | 22 | 24 |
| 2004 | 25 | 47 |
| 2005 | 26 | 67 |
| 2006 | 45 | 65 |
| 2007 | 49 | 91 |
| 2008 | 59 | 71 |
| 2009 | 42 | 52 |
| 2010 | 49 | 34 |
| 2011 | 48 | 14 |
| 2012 | 30 | 11 |
| 2013 | 14 | 5 |
| 2014 | 10 | 5 |
| 2015 | 5 | 3 |
| 2016 | 5 | 1 |
| 2017 | 2 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Power converter27 Oct 2020US 10,819,235 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Converter with control loop23 Apr 2019US 10,271,389 B2Signify Holding B. V.
- N-sine wave inverter22 May 2018US 9,979,321 B2Casco Products Corporation
- Device for controlling a plurality of electrical consumers6 Feb 2018US 9,888,553 B2Exscitron GmbH
- Enhanced variable control, current sensing drivers with zeta scan10 Oct 2017US 9,788,402 B2Luxor Scientific, Inc
- Fluid treatment device and lighting circuit3 Oct 2024US 2024/0334561 A1Ushio Denki Kabushiki Kaisha
- Ultraviolet light radiating device, and method for using ultraviolet light radiating device6 Jun 2024US 2024/0181102 A1Ushio Denki Kabushiki Kaisha
- Curing Device Comprising a Lamp that Produces UV Light3 Mar 2022US 2022/0063146 A1I.S.T. Innovative Sewer Technologies GmbH
- Power converter26 Mar 2020US 2020/0098968 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Power Converter26 Mar 2020US 2020/0099297 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
Most cited
By later US patents
- Electronic ballast system528US 4,414,492 AIntent Patent A.G. · 1983
- High efficiency two stage inverter210US 7,218,541 B2Dell Products L. P. · 2007
- Liquid crystal display having an improved lighting device166US 6,636,190 B2Hitachi Device Engineering Co., Ltd. · 2003
- Drive device and drive method for a cold cathode fluorescent lamp142US 6,566,821 B2Matsushita Electric Industrial Co., Ltd. · 2003
- Apparatus for controlling a discharge lamp in a backlighted display132US 6,114,814 AMonolithic Power Systems, Inc. · 2000