H02J 50/40
Circuit arrangements or systems for wireless supply or distribution of electric power
Official title: using two or more transmitting or receiving devices (H02J50/50 takes precedence)
H02J50/40 (Circuit arrangements or systems for wireless supply or distribution of electric power) appears on 4,082 US grants and 5,347 published applications in this corpus.
Search patents in H02J- Granted patents
- 4,082
- Published applications
- 5,347
- Assignees
- 1,153
- Inventors
- 6,233
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 3 |
| 2002 | 12 | 11 |
| 2003 | 7 | 12 |
| 2004 | 9 | 13 |
| 2005 | 8 | 18 |
| 2006 | 9 | 13 |
| 2007 | 13 | 40 |
| 2008 | 13 | 47 |
| 2009 | 11 | 68 |
| 2010 | 30 | 114 |
| 2011 | 48 | 145 |
| 2012 | 63 | 216 |
| 2013 | 106 | 201 |
| 2014 | 114 | 299 |
| 2015 | 159 | 346 |
| 2016 | 247 | 302 |
| 2017 | 295 | 281 |
| 2018 | 359 | 325 |
| 2019 | 333 | 299 |
| 2020 | 287 | 383 |
| 2021 | 359 | 371 |
| 2022 | 331 | 473 |
| 2023 | 318 | 475 |
| 2024 | 390 | 370 |
| 2025 | 300 | 317 |
| 2026 | 211 | 205 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wireless charging device6 Oct 2026US 12,756,214 B2Inventec Corporation
- Magnetic wireless charger6 Oct 2026US 12,756,228 B2Scanstrut Limited
- Electronic device and wireless power transmission/reception method in electronic device6 Oct 2026US 12,756,235 B2Samsung Electronics Co., Ltd.
- Automotive car seat wireless charging system6 Oct 2026US 12,756,238 B2Yank Technologies, Inc.
- Wireless power distribution system6 Oct 2026US 12,756,239 B2Wi-Charge Ltd.
- Ground power supply device and wiring8 Oct 2026US 2026/0307513 A1Denso Corporation
- Apparatus, systems and methods for scalable 3d wireless charging utilizing multiple coils8 Oct 2026US 2026/0312431 A1GaN Systems Inc.
- Wireless power transmission system8 Oct 2026US 2026/0312439 A1Delta Electronics (Thailand) Public Co., Ltd.
- Transport system and operating method for transport system1 Oct 2026US 2026/0299599 A1APh ePower Co., Ltd.
- Wireless power transfer device for automatic logistics systems1 Oct 2026US 2026/0302832 A1Green Power Co., Ltd.
Most cited
By later US patents
- Inductive power adapter1,119US 7,378,817 B2Microsoft Corporation · 2008
- Inductive battery charger1,039US 7,375,493 B2Microsoft Corporation · 2008
- Wireless non-radiative energy transfer952US 7,741,734 B2Massachusetts Institute of Technology · 2010
- Charging of devices by microwave power beaming715US 6,967,462 B1NASA Glenn Research Center · 2005
- Method and apparatus for wireless powering and recharging696US 6,127,799 AGTE Internetworking Incorporated · 2000