H02M 3/33538
Of the forward type
Official title: {of the forward type (H02M3/3353, H02M3/33569 take precedence)}
H02M3/33538 (Of the forward type) appears on 931 US grants and 849 published applications in this corpus.
Search patents in H02M- Granted patents
- 931
- Published applications
- 849
- Assignees
- 404
- Inventors
- 1,500
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 17 | 0 |
| 1988 | 13 | 0 |
| 1989 | 11 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 11 | 3 |
| 2003 | 4 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 7 |
| 2006 | 6 | 6 |
| 2007 | 4 | 2 |
| 2008 | 4 | 7 |
| 2009 | 3 | 5 |
| 2010 | 5 | 9 |
| 2011 | 7 | 13 |
| 2012 | 6 | 16 |
| 2013 | 11 | 32 |
| 2014 | 22 | 67 |
| 2015 | 36 | 114 |
| 2016 | 98 | 97 |
| 2017 | 129 | 103 |
| 2018 | 113 | 83 |
| 2019 | 82 | 62 |
| 2020 | 79 | 57 |
| 2021 | 53 | 40 |
| 2022 | 33 | 29 |
| 2023 | 29 | 37 |
| 2024 | 23 | 24 |
| 2025 | 23 | 20 |
| 2026 | 14 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Forward DC-DC converter6 Oct 2026US 12,756,301 B2Kabushiki Kaisha Toyota Jidoshokki
- Drive circuit18 Aug 2026US 12,712,434 B2Solaredge Technologies Ltd.
- Electric power conversion apparatus and electric power conversion system11 Aug 2026US 12,706,541 B2TDK Corporation
- Switch control circuit and power converter comprising the same11 Aug 2026US 12,706,543 B2Chengdu Monolithic Power Systems Co., Ltd.
- Wireless power receiving device21 Jul 2026US 12,689,235 B2Murata Manufacturing Co., Ltd.
- Electronic device for providing power to external device, and operating method thereof13 Aug 2026US 2026/0238136 A1Samsung Electronics Co., Ltd.
- Dc-dc converter using parallel point-of-load integrated circuits30 Jul 2026US 2026/0221884 A1Murata Manufacturing Co., Ltd.
- Inverter power generation systems and techniques30 Jul 2026US 2026/0221892 A1Generac Power Systems, Inc.
- Fast response transformer-based power converters for arc welding11 Jun 2026US 2026/0158580 A1Illinois Tool Works Inc.
- Electric power conversion apparatus and electric power conversion system4 Jun 2026US 2026/0155752 A1TDK Corporation
Most cited
By later US patents
- DC-to-DC switching converter with zero input and output current ripple and integrated magnetics circuits328US 4,257,087 ACalifornia Institute of Technology · 1981
- Zero-current switching quasi-resonant converters operating in a full-wave mode284US 4,720,667 A1988
- Zero voltage switching cells for power converters215US 6,452,814 B1Technical Witts, Inc. · 2002
- DC-to-DC switching converter176US 4,184,197 ACalifornia Institute of Technology · 1980
- Forward converter switching at zero current176US 4,415,959 AVicor Corporation · 1983