H02M 5/20
Using discharge tubes without control electrode or semiconductor devices without control electrode
Official title: using discharge tubes without control electrode or semiconductor devices without control electrode
H02M5/20 (Using discharge tubes without control electrode or semiconductor devices without control electrode) appears on 9 US grants and 5 published applications in this corpus.
Search patents in H02M- Granted patents
- 9
- Published applications
- 5
- Assignees
- 7
- Inventors
- 20
- Latest grant
- 21 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 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 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Power stealing in relay circuits29 Aug 2023US 11,742,692 B1Amazon Technologies, Inc.
- Circuit for switching an AC voltage16 Aug 2022US 11,418,124 B2Rosenberger Hochfrequenztechnik GmbH & Co. KG
- Holdup time circuit and method for bridgeless PFC converter10 Sep 2019US 10,411,591 B2Futurewei Technologies, Inc.
- Holdup time circuit and method for bridgeless PFC converter7 Mar 2017US 9,590,495 B2Futurewei Technologies, Inc.
- Apparatus for power conversion and method for operating the apparatus13 Aug 2026US 2026/0238001 A1Hitachi Energy Ltd
- Circuit for switching an ac voltage18 Nov 2021US 2021/0359616 A1Rosenberger Hochfrequenztechnik GmbH & Co. KG
- Holdup Time Circuit and Method for Bridgeless PFC Converter22 Jun 2017US 2017/0179813 A1Futurewei Technologies, Inc.
- Magnetic field energy harvesting device12 Nov 2015US 2015/0326136 A1Analog Devices Technology
- Holdup Time Circuit and Method for Bridgeless PFC Converter28 Feb 2013US 2013/0049709 A1Futurewei Technologies, Inc.
Most cited
By later US patents
- Variable voltage regulator23US 5,118,993 A1992
- Secondary electric power source produced by current flow through a primary a.c. power circuit18US 4,948,987 A1990
- Circuit system for lighting a discharge lamp or lamps11US 4,376,911 ANew Nippon Electric Co., Ltd. · 1983
- Electronic power control device2US 4,211,940 AMatsushita Electric Industrial Co., Ltd. · 1980
- Holdup time circuit and method for bridgeless PFC converter2US 9,590,495 B2Futurewei Technologies, Inc. · 2017