H02M 3/335
Using semiconductor devices only
Official title: using semiconductor devices only
H02M3/335 (Using semiconductor devices only) appears on 14,102 US grants and 13,659 published applications in this corpus.
Search patents in H02M- Granted patents
- 14,102
- Published applications
- 13,659
- Assignees
- 2,988
- Inventors
- 16,565
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 67 | 0 |
| 1978 | 45 | 0 |
| 1979 | 29 | 0 |
| 1980 | 33 | 0 |
| 1981 | 65 | 0 |
| 1982 | 57 | 0 |
| 1983 | 46 | 0 |
| 1984 | 63 | 0 |
| 1985 | 59 | 0 |
| 1986 | 66 | 0 |
| 1987 | 113 | 0 |
| 1988 | 81 | 0 |
| 1989 | 98 | 0 |
| 1990 | 84 | 0 |
| 1991 | 70 | 0 |
| 1992 | 75 | 0 |
| 1993 | 67 | 0 |
| 1994 | 98 | 0 |
| 1995 | 99 | 0 |
| 1996 | 101 | 0 |
| 1997 | 144 | 0 |
| 1998 | 140 | 0 |
| 1999 | 189 | 0 |
| 2000 | 180 | 0 |
| 2001 | 196 | 55 |
| 2002 | 238 | 205 |
| 2003 | 193 | 170 |
| 2004 | 179 | 226 |
| 2005 | 166 | 253 |
| 2006 | 213 | 312 |
| 2007 | 209 | 300 |
| 2008 | 218 | 364 |
| 2009 | 247 | 342 |
| 2010 | 298 | 394 |
| 2011 | 310 | 435 |
| 2012 | 325 | 487 |
| 2013 | 388 | 527 |
| 2014 | 434 | 751 |
| 2015 | 585 | 769 |
| 2016 | 766 | 664 |
| 2017 | 787 | 680 |
| 2018 | 825 | 768 |
| 2019 | 869 | 742 |
| 2020 | 783 | 758 |
| 2021 | 644 | 726 |
| 2022 | 665 | 777 |
| 2023 | 667 | 822 |
| 2024 | 617 | 851 |
| 2025 | 699 | 724 |
| 2026 | 479 | 557 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02M 3/33569Having several active switching elements6,454
- H02M 3/33507With automatic control of the output voltage or current6,166
- H02M 3/337In push-pull configuration1,594
- H02M 3/33538Of the forward type931
- H02M 3/33561Having more than one ouput with independent control920
- H02M 3/338In a self-oscillating arrangement739
- H02M 3/3353Having at least two simultaneously operating switches on the input side288
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
- 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
- Contactless electrical energy transmission system425US 6,301,128 B1Delta Electronics, Inc. · 2001