H01F 27/2804
Printed windings
Official title: {Printed windings}
H01F27/2804 (Printed windings) appears on 3,440 US grants and 4,365 published applications in this corpus.
Search patents in H01F- Granted patents
- 3,440
- Published applications
- 4,365
- Assignees
- 1,010
- Inventors
- 6,309
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 9 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 17 | 0 |
| 1999 | 17 | 0 |
| 2000 | 20 | 0 |
| 2001 | 17 | 12 |
| 2002 | 27 | 45 |
| 2003 | 32 | 32 |
| 2004 | 39 | 42 |
| 2005 | 34 | 25 |
| 2006 | 20 | 32 |
| 2007 | 31 | 41 |
| 2008 | 45 | 65 |
| 2009 | 29 | 58 |
| 2010 | 40 | 61 |
| 2011 | 59 | 59 |
| 2012 | 43 | 59 |
| 2013 | 59 | 121 |
| 2014 | 78 | 170 |
| 2015 | 103 | 211 |
| 2016 | 153 | 219 |
| 2017 | 178 | 332 |
| 2018 | 209 | 309 |
| 2019 | 266 | 423 |
| 2020 | 271 | 375 |
| 2021 | 250 | 329 |
| 2022 | 320 | 336 |
| 2023 | 284 | 278 |
| 2024 | 304 | 279 |
| 2025 | 247 | 243 |
| 2026 | 152 | 209 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multilayer-type coil component6 Oct 2026US 12,755,894 B2Murata Manufacturing Co., Ltd.
- Variable magnetic layer for wireless charging6 Oct 2026US 12,755,898 B23M Innovative Properties Company
- Semiconductor device and semiconductor device fabrication method6 Oct 2026US 12,757,726 B2Lapis Semiconductor Co., Ltd.
- Single layer and multilayer magnetic inductors between substrate cores6 Oct 2026US 12,757,740 B2Intel Corporation
- Electrical element, circuit board, and switching power supply29 Sep 2026US 12,749,614 B2Huawei Technologies Co., Ltd.
- Magnetic composition, magnetic film, stack, and circuit member8 Oct 2026US 2026/0311918 A1
- Coil substrate, motor coil substrate, and motor8 Oct 2026US 2026/0311926 A1Ibiden Co., Ltd.
- Electronic component8 Oct 2026US 2026/0311928 A1TDK Corporation
- Medical Wireless Charging Device With Ferrite Stack Centered And Directly Contacted To A Charging Coil8 Oct 2026US 2026/0312429 A1Greatbatch Ltd.
- Filter, preparation method thereof, and electronic apparatus8 Oct 2026US 2026/0312561 A1Beijing BOE Sensor Technology Co., Ltd.
Most cited
By later US patents
- System and method for inductive charging of portable devices499US 8,169,185 B2Mojo Mobility, Inc. · 2012
- Contact-less power transfer495US 6,906,495 B2Splashpower Limited · 2005
- Contact-less power transfer438US 7,525,283 B2Access Business Group International LLC · 2009
- Planar transformer power supply266US 7,502,234 B2Aaron Medical Industries, Inc. · 2009
- Inductive structures for semiconductor integrated circuits217US 5,095,357 AMitsubishi Denki Kabushiki Kaisha · 1992