H01F 30/06
Fixed transformers not covered by group h01f19/00: characterised by the structure
Official title: characterised by the structure
H01F30/06 (Fixed transformers not covered by group h01f19/00: characterised by the structure) appears on 917 US grants and 918 published applications in this corpus.
Search patents in H01F- Granted patents
- 917
- Published applications
- 918
- Assignees
- 566
- Inventors
- 2,011
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 13 | 0 |
| 1986 | 8 | 0 |
| 1987 | 16 | 0 |
| 1988 | 8 | 0 |
| 1989 | 21 | 0 |
| 1990 | 14 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 9 | 0 |
| 1994 | 16 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 11 | 0 |
| 1998 | 9 | 0 |
| 1999 | 9 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 5 |
| 2002 | 13 | 19 |
| 2003 | 16 | 20 |
| 2004 | 15 | 26 |
| 2005 | 24 | 26 |
| 2006 | 27 | 28 |
| 2007 | 25 | 36 |
| 2008 | 21 | 35 |
| 2009 | 18 | 31 |
| 2010 | 34 | 37 |
| 2011 | 25 | 29 |
| 2012 | 21 | 23 |
| 2013 | 25 | 49 |
| 2014 | 22 | 35 |
| 2015 | 33 | 42 |
| 2016 | 26 | 30 |
| 2017 | 30 | 40 |
| 2018 | 27 | 47 |
| 2019 | 45 | 66 |
| 2020 | 45 | 64 |
| 2021 | 39 | 36 |
| 2022 | 38 | 37 |
| 2023 | 34 | 38 |
| 2024 | 29 | 49 |
| 2025 | 36 | 46 |
| 2026 | 15 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Integral transformer junction module6 Oct 2026US 12,755,887 B2
- Current transformer assemblies8 Sep 2026US 12,731,727 B2Schneider Electric USA, Inc.
- Transformer for LDC of electric vehicle1 Sep 2026US 12,725,731 B2Atum Co., Ltd.
- Transformer, power conversion device, product group of transformer, and manufacturing method for transformer18 Aug 2026US 12,712,115 B2Mitsubishi Electric Corporation
- X-ray fluorescence spectrometer and power supply apparatus14 Jul 2026US 12,680,972 B2Shimadzu Corporation
- Coil component and electronic/electric device27 Aug 2026US 2026/0253790 A1Delta Electronics (Japan), Inc.
- Integral transformer junction module13 Aug 2026US 2026/0237549 A1
- Integrated magnetic assembly for a multiphase dc-to-dc power converter13 Aug 2026US 2026/0237554 A1Delta Electronics (Thailand) Public Co., Ltd.
- Electronic component, in particular a three-phase transformer for an isolated voltage converter9 Jul 2026US 2026/0196404 A1Valeo Electrification
- Dynamic power flow controller (dpfc) for regulating power flow in a power transmission line25 Jun 2026US 2026/0178063 A1
Most cited
By later US patents
- Split core sensing transformer254US 7,312,686 B2Veris Industries, LLC · 2007
- Combination transformer with common core portions231US 4,488,136 AWestinghouse Electric Corp. · 1984
- Switching electrical power supply utilizing miniature inductors integrally in a PCB210US 4,622,627 ATheta-J Corporation · 1986
- High-power, low-loss high-frequency electrical coil188US 3,946,349 AThe United States of America as represented by the Secretary of the Air Force · 1976
- Integrated circuit toroidal inductor182US 5,793,272 AInternational Business Machines Corporation · 1998