H01F 38/14
Inductive couplings
H01F38/14 (Inductive couplings) appears on 4,219 US grants and 5,196 published applications in this corpus.
Search patents in H01F- Granted patents
- 4,219
- Published applications
- 5,196
- Assignees
- 1,328
- Inventors
- 6,833
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 17 | 0 |
| 1996 | 12 | 0 |
| 1997 | 13 | 0 |
| 1998 | 18 | 0 |
| 1999 | 18 | 0 |
| 2000 | 9 | 0 |
| 2001 | 16 | 3 |
| 2002 | 14 | 18 |
| 2003 | 8 | 22 |
| 2004 | 18 | 24 |
| 2005 | 16 | 27 |
| 2006 | 31 | 24 |
| 2007 | 23 | 37 |
| 2008 | 10 | 53 |
| 2009 | 20 | 90 |
| 2010 | 35 | 124 |
| 2011 | 59 | 112 |
| 2012 | 58 | 169 |
| 2013 | 105 | 302 |
| 2014 | 165 | 430 |
| 2015 | 187 | 462 |
| 2016 | 309 | 371 |
| 2017 | 414 | 405 |
| 2018 | 410 | 446 |
| 2019 | 404 | 386 |
| 2020 | 380 | 339 |
| 2021 | 334 | 322 |
| 2022 | 297 | 291 |
| 2023 | 213 | 243 |
| 2024 | 254 | 212 |
| 2025 | 191 | 166 |
| 2026 | 101 | 118 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Variable magnetic layer for wireless charging6 Oct 2026US 12,755,898 B23M Innovative Properties Company
- Segmented wireless power transfer29 Sep 2026US 12,749,920 B2The Regents of the University of Michigan
- Isolator22 Sep 2026US 12,744,153 B2Kabushiki Kaisha Toshiba
- Power capability detection for wireless power transmission based on receiver power request15 Sep 2026US 12,738,772 B2NuCurrent, Inc.
- Operating frequency based power level altering in extended range wireless power transmitters15 Sep 2026US 12,738,774 B2NuCurrent, Inc.
- Plug-in connection part for inductively transmitting energy and/or signals in a potentially explosive environment, connecting device and measuring system8 Oct 2026US 2026/0311930 A1Knick Elektronische Messgeräte GmbH & Co. KG
- Magnetic component1 Oct 2026US 2026/0302046 A1Delta Electronics, Inc.
- Wireless power supply system24 Sep 2026US 2026/0291288 A1APh ePower Co., Ltd.
- Power conversion apparatus24 Sep 2026US 2026/0293029 A1LG Innotek Co., Ltd.
- Method and apparatus for inhibiting the growth of proliferating cells or viruses17 Sep 2026US 2026/0273298 A1Alternating Current Treatment Therapy Medical Inc.
Most cited
By later US patents
- Surgical sterilizer with integrated battery charging device1,015US 8,258,745 B2Syntheon, LLC · 2012
- Wireless non-radiative energy transfer952US 7,741,734 B2Massachusetts Institute of Technology · 2010
- Alignment independent and self aligning inductive power transfer system812US 6,803,744 B12004
- Planar resonator for wireless power transfer610US 6,960,968 B2Koninklijke Philips Electronics N. V. · 2005
- Inductive power source and charging system591US 7,952,322 B2Mojo Mobility, Inc. · 2011