B60L 2210/20
Ac to ac converters
Official title: AC to AC converters
B60L2210/20 (Ac to ac converters) appears on 530 US grants and 596 published applications in this corpus.
Search patents in B60L- Granted patents
- 530
- Published applications
- 596
- Assignees
- 222
- Inventors
- 1,003
- Latest grant
- 22 Sep 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 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 8 | 0 |
| 1995 | 3 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 5 | 0 |
| 2000 | 12 | 0 |
| 2001 | 5 | 5 |
| 2002 | 8 | 11 |
| 2003 | 9 | 19 |
| 2004 | 12 | 20 |
| 2005 | 15 | 16 |
| 2006 | 16 | 38 |
| 2007 | 12 | 25 |
| 2008 | 22 | 37 |
| 2009 | 26 | 57 |
| 2010 | 35 | 66 |
| 2011 | 47 | 67 |
| 2012 | 35 | 36 |
| 2013 | 45 | 19 |
| 2014 | 27 | 20 |
| 2015 | 18 | 21 |
| 2016 | 16 | 11 |
| 2017 | 14 | 15 |
| 2018 | 13 | 11 |
| 2019 | 12 | 8 |
| 2020 | 8 | 14 |
| 2021 | 12 | 17 |
| 2022 | 10 | 10 |
| 2023 | 13 | 13 |
| 2024 | 9 | 13 |
| 2025 | 11 | 12 |
| 2026 | 10 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power control system with a power splitter module22 Sep 2026US 12,741,556 B2GM Global Technology Operations LLC
- Driving apparatus, driving method, and driving program18 Aug 2026US 12,709,869 B2Nabtesco Corporation
- Power conversion device and aircraft18 Aug 2026US 12,712,470 B2Mitsubishi Electric Corporation
- Charging circuit of on-board charger, on-board charger, and charging control method11 Aug 2026US 12,703,257 B2Huawei Digital Power Technologies Co., Ltd.
- On-board OBC control circuit capable of bidirectionally charging and discharging and control method thereof28 Jul 2026US 12,691,773 B2Shenzhen Vmax New Energy (Group) Co., Ltd
- Power conversion device24 Sep 2026US 2026/0291397 A1Astemo, Ltd.
- Bi-directional power transfer for electric vehicles20 Aug 2026US 2026/0241833 A1GM Global Technology Operations LLC
- Single-stage bidirectional on-board charging module30 Jul 2026US 2026/0217145 A1GM Global Technology Operations LLC
- Pantograph bounce logic16 Jul 2026US 2026/0200327 A1Cummins Power Generation Inc.
- Systems and methods for power management and control16 Jul 2026US 2026/0200343 A1Tae Technologies, Inc.
Most cited
By later US patents
- Wireless energy transfer568US 7,825,543 B2Massachusetts Institute of Technology · 2010
- 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
- Wireless energy transfer369US 8,097,983 B2Massachusetts Institute of Technology · 2012
- Contactless battery charging system326US 5,341,083 AElectric Power Research Institute, Inc. · 1994