H01F 2027/2857
Coil formed from wound foil conductor
Official title: {Coil formed from wound foil conductor}
H01F2027/2857 (Coil formed from wound foil conductor) appears on 76 US grants and 88 published applications in this corpus.
Search patents in H01F- Granted patents
- 76
- Published applications
- 88
- Assignees
- 77
- Inventors
- 232
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 4 |
| 2003 | 2 | 2 |
| 2004 | 1 | 0 |
| 2005 | 3 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 2 | 4 |
| 2009 | 0 | 0 |
| 2010 | 2 | 4 |
| 2011 | 1 | 2 |
| 2012 | 0 | 3 |
| 2013 | 1 | 2 |
| 2014 | 4 | 7 |
| 2015 | 4 | 7 |
| 2016 | 2 | 3 |
| 2017 | 3 | 3 |
| 2018 | 1 | 2 |
| 2019 | 4 | 6 |
| 2020 | 5 | 3 |
| 2021 | 3 | 7 |
| 2022 | 3 | 6 |
| 2023 | 4 | 8 |
| 2024 | 8 | 9 |
| 2025 | 3 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Medium frequency transformer with parallel windings17 Feb 2026US 12,555,713 B2Hitachi Energy Ltd
- Coil element23 Dec 2025US 12,505,949 B2TDK Electronics Co., Ltd.
- Coil component7 Oct 2025US 12,437,911 B2Samsung Electro-Mechanics Co., Ltd.
- Filter device having tunable capacitance, method of manufacture and use thereof13 May 2025US 12,300,420 B2Astrodyne TDI
- Transformer module and power module3 Dec 2024US 12,159,749 B2Delta Electronics (Shanghai) Co., Ltd.
- Coil component and filter stage20 Aug 2026US 2026/0245782 A1
- Filter device having tunable capacitance, method of manufacture and use thereof4 Dec 2025US 2025/0373220 A1Astrodyne TDI
- Coil assembly6 Feb 2025US 2025/0046508 A13M Innovative Properties Company
- Inductor having high current coil with low direct current resistance17 Oct 2024US 2024/0347254 A1Vishay Dale Electronics, Inc.
- Coil, electrical system including the same and method of making coil5 Sep 2024US 2024/0296985 A13M Innovative Properties Company
Most cited
By later US patents
- Multi-layer, multi-functioning printed circuit board118US 6,420,953 B1Pulse Engineering, Inc. · 2002
- Coil for high-voltage transformer38US 5,598,137 ASiemens Aktiengesellschaft · 1997
- LC noise filter34US 5,495,213 A1996
- Foil wound coil for a solenoid valve30US 5,895,026 AKelsey-Hayes Company · 1999
- Ribbon coil for motor winding25US 5,262,746 AVictor Company of Japan, Ltd. · 1993