H01F 27/30
Fastening or clamping coils, windings, or parts thereof together
Official title: Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
H01F27/30 (Fastening or clamping coils, windings, or parts thereof together) appears on 1,448 US grants and 2,051 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,448
- Published applications
- 2,051
- Assignees
- 684
- Inventors
- 3,754
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 10 | 0 |
| 1982 | 10 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 2 | 0 |
| 1989 | 9 | 0 |
| 1990 | 9 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 7 | 13 |
| 2003 | 15 | 7 |
| 2004 | 9 | 14 |
| 2005 | 11 | 20 |
| 2006 | 22 | 30 |
| 2007 | 20 | 20 |
| 2008 | 15 | 31 |
| 2009 | 15 | 22 |
| 2010 | 14 | 41 |
| 2011 | 28 | 43 |
| 2012 | 35 | 56 |
| 2013 | 29 | 53 |
| 2014 | 55 | 84 |
| 2015 | 41 | 89 |
| 2016 | 59 | 71 |
| 2017 | 56 | 74 |
| 2018 | 66 | 114 |
| 2019 | 79 | 144 |
| 2020 | 96 | 160 |
| 2021 | 86 | 142 |
| 2022 | 99 | 153 |
| 2023 | 111 | 181 |
| 2024 | 138 | 199 |
| 2025 | 112 | 170 |
| 2026 | 84 | 119 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Core piece, reactor, converter, and power conversion device6 Oct 2026US 12,755,888 B2Autonetworks Technologies, Ltd.
- Inductor device29 Sep 2026US 12,749,613 B2Realtek Semiconductor Corp.
- Electrical element, circuit board, and switching power supply29 Sep 2026US 12,749,614 B2Huawei Technologies Co., Ltd.
- Flat coil and coil device29 Sep 2026US 12,749,615 B2TDK Corporation
- Electric transformer with an increased total leakage impedance29 Sep 2026US 12,749,616 B2Exxelia
- Coil component8 Oct 2026US 2026/0311927 A1Murata Manufacturing Co., Ltd.
- Magnetic shunt for toroidal magnetic assembly8 Oct 2026US 2026/0311929 A1Tesla, Inc.
- Magnetic component1 Oct 2026US 2026/0302046 A1Delta Electronics, Inc.
- Method for controlling magnetic flux17 Sep 2026US 2026/0279645 A1Delta Electronics, Inc.
- Wiring conductor and coil component17 Sep 2026US 2026/0279655 A1TDK Corporation
Most cited
By later US patents
- Power conversion and distribution system283US 5,982,645 ASquare D Company · 1999
- Transformer construction143US 8,410,889 B2Enecsys Limited · 2013
- Transformer construction122US 8,917,156 B2Enecsys Limited · 2014
- Electroacoustic transducer85US 7,062,063 B2Sonion Horsens A/S · 2006
- Transformer for use with surface mounting technology83US 4,975,671 AApple Computer, Inc. · 1990