H02M 3/33571
Half-bridge at primary side of an isolation transformer
Official title: {Half-bridge at primary side of an isolation transformer}
H02M3/33571 (Half-bridge at primary side of an isolation transformer) appears on 1,366 US grants and 1,637 published applications in this corpus.
Search patents in H02M- Granted patents
- 1,366
- Published applications
- 1,637
- Assignees
- 585
- Inventors
- 2,579
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 12 | 0 |
| 1998 | 12 | 0 |
| 1999 | 19 | 0 |
| 2000 | 14 | 0 |
| 2001 | 10 | 7 |
| 2002 | 19 | 19 |
| 2003 | 17 | 14 |
| 2004 | 11 | 12 |
| 2005 | 13 | 19 |
| 2006 | 19 | 30 |
| 2007 | 16 | 18 |
| 2008 | 11 | 26 |
| 2009 | 10 | 24 |
| 2010 | 23 | 24 |
| 2011 | 20 | 37 |
| 2012 | 26 | 44 |
| 2013 | 33 | 31 |
| 2014 | 28 | 42 |
| 2015 | 35 | 50 |
| 2016 | 50 | 41 |
| 2017 | 48 | 59 |
| 2018 | 64 | 63 |
| 2019 | 82 | 79 |
| 2020 | 88 | 120 |
| 2021 | 89 | 87 |
| 2022 | 89 | 131 |
| 2023 | 110 | 167 |
| 2024 | 103 | 175 |
| 2025 | 144 | 182 |
| 2026 | 105 | 136 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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