H01H 47/10
By switching-in or -out impedance external to the relay winding
Official title: by switching-in or -out impedance external to the relay winding
H01H47/10 (By switching-in or -out impedance external to the relay winding) appears on 35 US grants and 15 published applications in this corpus.
Search patents in H01H- Granted patents
- 35
- Published applications
- 15
- Assignees
- 23
- Inventors
- 56
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 2 | 2 |
| 2015 | 0 | 3 |
| 2016 | 4 | 1 |
| 2017 | 2 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 1 | 1 |
| 2021 | 3 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Relay driving apparatus for controlling operation of multiple switches27 Jan 2026US 12,537,154 B2Hanwha Solutions Corporation
- Relay circuit and electric junction box10 Jan 2023US 11,553,573 B2Sumitomo Wiring Systems, Ltd.
- Relay control device19 Oct 2021US 11,152,176 B2Mitsubishi Electric Corporation
- Air conditioner having relay coil abnormality voltage control18 May 2021US 11,009,254 B2Mitsubishi Electric Corporation
- Contactor coil control circuit2 Feb 2021US 10,910,182 B2Mornsun Guangzhou Science & Technology Co., Ltd.
- Relay driving device1 Aug 2024US 2024/0258056 A1Hanwha Solutions Corporation
- Relay circuit and electric junction box28 Jan 2021US 2021/0027962 A1Sumitomo Wiring Systems, Ltd.
- Relay control device8 Oct 2020US 2020/0321177 A1Mitsubishi Electric Corporation
- Air conditioner5 Dec 2019US 2019/0368767 A1Mitsubishi Electric Corporation
- Contactor coil control circuit31 Jan 2019US 2019/0035583 A1Mornsun Guangzhou Science & Technology Co., Ltd.
Most cited
By later US patents
- Fuzzy logic adaptive defrost control32US 5,493,867 AWhirlpool Corporation · 1996
- Defrost cycle controller17US 5,363,669 AWhirlpool Corporation · 1994
- Bidirectional DC motor control circuit including overcurrent protection PTC device and relay16US 6,078,160 A2000
- Defrost cycle controller15US 5,469,715 AWhirlpool Corporation · 1995
- Energization circuit for a microwave oven13US 4,321,447 AThe Tappan Company · 1982