H02H 9/047
Free-wheeling circuits
Official title: {Free-wheeling circuits}
H02H9/047 (Free-wheeling circuits) appears on 97 US grants and 56 published applications in this corpus.
Search patents in H02H- Granted patents
- 97
- Published applications
- 56
- Assignees
- 78
- Inventors
- 229
- Latest grant
- 30 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 5 | 2 |
| 2004 | 3 | 4 |
| 2005 | 5 | 3 |
| 2006 | 0 | 12 |
| 2007 | 5 | 2 |
| 2008 | 2 | 4 |
| 2009 | 5 | 7 |
| 2010 | 2 | 1 |
| 2011 | 7 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 0 |
| 2014 | 2 | 1 |
| 2015 | 0 | 2 |
| 2016 | 2 | 2 |
| 2017 | 2 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 3 |
| 2020 | 3 | 0 |
| 2021 | 2 | 1 |
| 2022 | 1 | 2 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Converter and on-board charger30 Jul 2024US 12,051,966 B2Huawei Digital Power Technologies Co., Ltd.
- Magnet control units6 Dec 2022US 11,521,774 B2Hubbell Incorporated
- Load control device having multiple terminals and a clamp circuit connected therebetween14 Dec 2021US 11,201,614 B2Hitachi Automotive Systems, Ltd.
- Contactor coil control circuit2 Feb 2021US 10,910,182 B2Mornsun Guangzhou Science & Technology Co., Ltd.
- Voltage regulator of a generator4 Aug 2020US 10,734,833 B2Robert Bosch GmbH
- Voltage-limiting circuit and field device comprising such a voltage-limiting circuit6 Aug 2026US 2026/0229884 A1Endress+Hauser Wetzer GmbH+Co.KG
- Contactor10 Jul 2025US 2025/0226744 A1Schneider Electric Industries SAS
- Main switch of an electrical system of a vehicle28 Sep 2023US 2023/0303018 A1Ellenberger & Poensgen GmbH
- Converter and on-board charger14 Jul 2022US 2022/0224225 A1Huawei Digital Power Technologies Co., Ltd.
- Magnet control units3 Mar 2022US 2022/0068535 A1Hubbell Incorported
Most cited
By later US patents
- Motor driving circuit68US 5,703,451 ARohm Co., Ltd. · 1997
- Start winding switch protection circuit56US 5,103,154 ATexas Instruments Incorporated · 1992
- Autonomous active clamp circuit47US 5,091,817 AGeneral Electric Company · 1992
- Transistor protection circuit for automotive motor control applications31US 4,679,112 AGeneral Motors Corporation · 1987
- Motor drive circuit with reverse-battery protection25US 5,012,381 AMotorola, Inc. · 1991