H02M 5/44
Using discharge tubes or semiconductor devices to convert the intermediate dc into
Official title: using discharge tubes or semiconductor devices to convert the intermediate DC into AC
H02M5/44 (Using discharge tubes or semiconductor devices to convert the intermediate dc into) appears on 2,569 US grants and 2,514 published applications in this corpus.
Search patents in H02M- Granted patents
- 2,569
- Published applications
- 2,514
- Assignees
- 846
- Inventors
- 4,516
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 17 | 0 |
| 1978 | 14 | 0 |
| 1979 | 8 | 0 |
| 1980 | 10 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 14 | 0 |
| 1985 | 10 | 0 |
| 1986 | 16 | 0 |
| 1987 | 14 | 0 |
| 1988 | 24 | 0 |
| 1989 | 23 | 0 |
| 1990 | 12 | 0 |
| 1991 | 19 | 0 |
| 1992 | 14 | 0 |
| 1993 | 17 | 0 |
| 1994 | 12 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 19 | 0 |
| 1998 | 14 | 0 |
| 1999 | 15 | 0 |
| 2000 | 36 | 0 |
| 2001 | 27 | 8 |
| 2002 | 18 | 24 |
| 2003 | 28 | 36 |
| 2004 | 31 | 44 |
| 2005 | 26 | 43 |
| 2006 | 36 | 40 |
| 2007 | 34 | 45 |
| 2008 | 30 | 48 |
| 2009 | 35 | 50 |
| 2010 | 43 | 63 |
| 2011 | 36 | 64 |
| 2012 | 60 | 71 |
| 2013 | 68 | 119 |
| 2014 | 70 | 133 |
| 2015 | 95 | 168 |
| 2016 | 138 | 161 |
| 2017 | 196 | 167 |
| 2018 | 165 | 179 |
| 2019 | 191 | 158 |
| 2020 | 187 | 182 |
| 2021 | 146 | 164 |
| 2022 | 155 | 135 |
| 2023 | 107 | 135 |
| 2024 | 120 | 112 |
| 2025 | 126 | 70 |
| 2026 | 48 | 95 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Induction heating cooktop and wireless indicator for indicating operation state thereof29 Sep 2026US 12,750,926 B2LG Electronics Inc.
- Method for controlling a serial electrical distribution system and associated serial power distribution system8 Sep 2026US 12,730,489 B2Schneider Electric Industries SAS
- Thermally conductive polymer enclosure for an electrical system8 Sep 2026US 12,733,137 B2Eaton Intelligent Power Limited
- Method for controlling the rotational speed or the torque of a motor, rotational speed control system and control device25 Aug 2026US 12,715,305 B2AUMOVIO Germany GmbH
- Isolation transformer and power converter25 Aug 2026US 12,718,981 B2Huawei Technologies Co., Ltd.
- Damping-disconnect circuit for a power converter8 Oct 2026US 2026/0312489 A1Eaton Intelligent Power Limited
- Circuit for driving a motor of a vacuum pump, vacuum pump assembly, and method8 Oct 2026US 2026/0312507 A1Edwards Limited
- Cooking appliance1 Oct 2026US 2026/0304565 A1LG Electronics Inc.
- Electric power supply apparatus for an electric furnace17 Sep 2026US 2026/0282183 A1Danieli Automation S.P.A.
- Relating to the control of bipole power transmission networks10 Sep 2026US 2026/0269622 A1GE Vernova Infrastructure Technology LLC
Most cited
By later US patents
- Apparatus for controlling electric motor861US 4,788,485 AMitsubishi Denki Kabushiki Kaisha · 1988
- Inductive power distribution system300US 5,293,308 AAuckland Uniservices Limited · 1994
- Modular power supply with PLL control298US 4,783,728 AModular Power Corporation · 1988
- Rectifying-and-modulating circuit and wireless power receiver incorporating the same270US 9,225,196 B2Richtek Technology Corporation · 2015
- Power converter system218US 6,603,672 B1Ballard Power Systems Inc. · 2003