B60L 53/122
Circuits or methods for driving the primary coil
Official title: Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
B60L53/122 (Circuits or methods for driving the primary coil) appears on 862 US grants and 1,212 published applications in this corpus.
Search patents in B60L- Granted patents
- 862
- Published applications
- 1,212
- Assignees
- 296
- Inventors
- 1,536
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 2 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 6 |
| 2010 | 1 | 12 |
| 2011 | 5 | 26 |
| 2012 | 5 | 40 |
| 2013 | 17 | 60 |
| 2014 | 20 | 90 |
| 2015 | 35 | 121 |
| 2016 | 69 | 125 |
| 2017 | 112 | 109 |
| 2018 | 109 | 78 |
| 2019 | 116 | 63 |
| 2020 | 55 | 53 |
| 2021 | 57 | 68 |
| 2022 | 53 | 76 |
| 2023 | 39 | 55 |
| 2024 | 60 | 82 |
| 2025 | 46 | 87 |
| 2026 | 44 | 57 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Control device, control method, and storage medium for contactless power transmission system24 Sep 2026US 2026/0285174 A1Honda Motor Co., Ltd.
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Most cited
By later US patents
- Wireless energy transfer using planar capacitively loaded conducting loop resonators449US 8,035,255 B2WiTricity Corporation · 2011
- Wireless energy transfer converters438US 8,497,601 B2WiTricity Corporation · 2013
- Contactless electrical energy transmission system425US 6,301,128 B1Delta Electronics, Inc. · 2001
- Wireless energy transfer for refrigerator application311US 8,106,539 B2WiTricity Corporation · 2012
- Induction charging system307US 3,938,018 A1976