H02M 3/28
Using discharge tubes with control electrode or semiconductor devices with control electrode
Official title: using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
H02M3/28 (Using discharge tubes with control electrode or semiconductor devices with control electrode) appears on 14,844 US grants and 14,152 published applications in this corpus.
Search patents in H02M- Granted patents
- 14,844
- Published applications
- 14,152
- Assignees
- 3,146
- Inventors
- 17,438
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 41 | 0 |
| 1977 | 79 | 0 |
| 1978 | 51 | 0 |
| 1979 | 32 | 0 |
| 1980 | 38 | 0 |
| 1981 | 73 | 0 |
| 1982 | 66 | 0 |
| 1983 | 55 | 0 |
| 1984 | 72 | 0 |
| 1985 | 68 | 0 |
| 1986 | 74 | 0 |
| 1987 | 130 | 0 |
| 1988 | 98 | 0 |
| 1989 | 114 | 0 |
| 1990 | 97 | 0 |
| 1991 | 78 | 0 |
| 1992 | 81 | 0 |
| 1993 | 75 | 0 |
| 1994 | 110 | 0 |
| 1995 | 112 | 0 |
| 1996 | 114 | 0 |
| 1997 | 163 | 0 |
| 1998 | 174 | 0 |
| 1999 | 204 | 0 |
| 2000 | 195 | 0 |
| 2001 | 208 | 57 |
| 2002 | 252 | 221 |
| 2003 | 209 | 186 |
| 2004 | 192 | 252 |
| 2005 | 175 | 274 |
| 2006 | 234 | 332 |
| 2007 | 221 | 321 |
| 2008 | 232 | 378 |
| 2009 | 269 | 358 |
| 2010 | 309 | 421 |
| 2011 | 321 | 450 |
| 2012 | 343 | 502 |
| 2013 | 401 | 543 |
| 2014 | 452 | 767 |
| 2015 | 597 | 794 |
| 2016 | 788 | 683 |
| 2017 | 820 | 706 |
| 2018 | 851 | 797 |
| 2019 | 897 | 760 |
| 2020 | 800 | 784 |
| 2021 | 672 | 749 |
| 2022 | 685 | 801 |
| 2023 | 683 | 842 |
| 2024 | 637 | 870 |
| 2025 | 714 | 737 |
| 2026 | 488 | 567 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Charging system, charging method, and vehicle6 Oct 2026US 12,756,211 B2Shinry Technologies Co., Ltd.
- Power supply apparatus6 Oct 2026US 12,756,294 B2Delta Electronics, Inc.
- Power supply device and power supply unit6 Oct 2026US 12,756,300 B2Giga-Byte Technology Co., Ltd.
- Forward DC-DC converter6 Oct 2026US 12,756,301 B2Kabushiki Kaisha Toyota Jidoshokki
- Resonant converter with multiple conversion circuits6 Oct 2026US 12,756,303 B2GS Yuasa International Ltd.
- Synchronous rectification driving method and apparatus, and device and direct-current converter8 Oct 2026US 2026/0312479 A1Vertiv Corporation
- Resonant power converter and method of forming8 Oct 2026US 2026/0312490 A1GE Aviation Systems LLC
- Multi-level structures and methods for switched-mode power supplies8 Oct 2026US 2026/0312495 A1Murata Manufacturing Co., Ltd.
- Switch-mode power converters with demagnetization detection and methods thereof8 Oct 2026US 2026/0312501 A1On-Bright Integrations Co., Ltd.
- Data transfer through an isolated power converter8 Oct 2026US 2026/0312502 A1Texas Instruments Incorporated
Most cited
By later US patents
- Constant-voltage switching power supply provided with overvoltage output protecting circuit, and electronic apparatus provided with overvoltage protecting circuit1,204US 7,215,517 B2Seiko Epson Corporation · 2007
- Method and system for communicating filter compensation coefficients for a digital power control system1,193US 7,249,267 B2Power-One, Inc. · 2007
- Apparatus and method of optimizing power system efficiency using a power loss model1,185US 8,179,705 B2Power-One, Inc. · 2012
- Contactless battery charger with wireless control link546US 6,184,651 B2Motorola, Inc. · 2001
- LED power control methods and apparatus433US 7,256,554 B2Color Kinetics Incorporated · 2007