H01F 41/04
For manufacturing coils
Official title: for manufacturing coils {(coils for transformer or inductances H01F27/28)}
H01F41/04 (For manufacturing coils) appears on 4,727 US grants and 5,143 published applications in this corpus.
Search patents in H01F- Granted patents
- 4,727
- Published applications
- 5,143
- Assignees
- 1,548
- Inventors
- 8,867
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 20 | 0 |
| 1978 | 28 | 0 |
| 1979 | 24 | 0 |
| 1980 | 18 | 0 |
| 1981 | 29 | 0 |
| 1982 | 16 | 0 |
| 1983 | 27 | 0 |
| 1984 | 23 | 0 |
| 1985 | 37 | 0 |
| 1986 | 16 | 0 |
| 1987 | 37 | 0 |
| 1988 | 29 | 0 |
| 1989 | 39 | 0 |
| 1990 | 27 | 0 |
| 1991 | 21 | 0 |
| 1992 | 27 | 0 |
| 1993 | 29 | 0 |
| 1994 | 33 | 0 |
| 1995 | 33 | 0 |
| 1996 | 45 | 0 |
| 1997 | 40 | 0 |
| 1998 | 46 | 0 |
| 1999 | 60 | 0 |
| 2000 | 74 | 0 |
| 2001 | 68 | 32 |
| 2002 | 84 | 107 |
| 2003 | 91 | 110 |
| 2004 | 78 | 121 |
| 2005 | 80 | 104 |
| 2006 | 101 | 91 |
| 2007 | 88 | 119 |
| 2008 | 66 | 118 |
| 2009 | 61 | 140 |
| 2010 | 92 | 112 |
| 2011 | 113 | 96 |
| 2012 | 85 | 75 |
| 2013 | 72 | 180 |
| 2014 | 89 | 185 |
| 2015 | 100 | 231 |
| 2016 | 143 | 239 |
| 2017 | 174 | 271 |
| 2018 | 191 | 376 |
| 2019 | 258 | 418 |
| 2020 | 285 | 411 |
| 2021 | 262 | 389 |
| 2022 | 284 | 307 |
| 2023 | 352 | 287 |
| 2024 | 297 | 236 |
| 2025 | 251 | 227 |
| 2026 | 151 | 161 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Inductor coil and forming method thereof6 Oct 2026US 12,755,885 B2Semiconductor Manufacturing International (Shanghai) Corporation
- Electro-magnetic coil with coolant permeability6 Oct 2026US 12,755,890 B2Magnebotix AG
- Multilayer-type coil component6 Oct 2026US 12,755,894 B2Murata Manufacturing Co., Ltd.
- Bobbin wound coil for an electromagnetic coupling6 Oct 2026US 12,755,896 B2Warner Electric Technology LLC
- Wire-coil providing device for moving a plurality of wire coils during the production of coil windings6 Oct 2026US 12,755,899 B2ZF Friedrichshafen AG
- Magnetic paste, circuit member, and method for manufacturing circuit member8 Oct 2026US 2026/0311919 A1
- Magnetic shunt for toroidal magnetic assembly8 Oct 2026US 2026/0311929 A1Tesla, Inc.
- Coil support assembly having coil support structures joined together via respective joint structures and methods of assembling same8 Oct 2026US 2026/0311931 A1GE Vernova Renovables Espana, S.L.
- Filter, preparation method thereof, and electronic apparatus8 Oct 2026US 2026/0312561 A1Beijing BOE Sensor Technology Co., Ltd.
- Method of manufacturing a coil component1 Oct 2026US 2026/0295668 A1Murata Manufacturing Co., Ltd.
Most cited
By later US patents
- Method of manufacturing a planar coil construction246US 5,142,767 AThe B. F. Goodrich Company · 1992
- Electronic part and a method of manufacturing the same236US 6,292,139 B1Murata Manufacturing Co., Ltd. · 2001
- Planar inductors213US 4,494,100 AMotorola, Inc. · 1985
- Switching electrical power supply utilizing miniature inductors integrally in a PCB210US 4,622,627 ATheta-J Corporation · 1986
- Transformer for integrated circuits191US 6,031,445 ASTMicroelectronics S.r.l. · 2000