H01H 47/20
For producing frequency-selective operation of the relay
Official title: for producing frequency-selective operation of the relay
H01H47/20 (For producing frequency-selective operation of the relay) appears on 8 US grants and 7 published applications in this corpus.
Search patents in H01H- Granted patents
- 8
- Published applications
- 7
- Assignees
- 10
- Inventors
- 18
- Latest grant
- 21 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 2 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 2 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Relay control apparatus and method21 Nov 2023US 11,823,855 B2LG Energy Solution, Ltd.
- Systems and methods for controlling relay activation timing6 Nov 2018US 10,121,622 B2Control4 Corporation
- Synchronizing switching times of relays to a zero-crossing5 Jun 2018US 9,991,066 B2Honeywell International Inc.
- Control circuit for relay-operated gas valves8 Sep 2009US 7,586,213 B2Honeywell International Inc.
- Coaxial cable switching circuit2 Jun 1981US 4,271,403 AData 100 Corporation
- System and method for regulating a voltage signal14 May 2026US 2026/0135052 A1Resideo LLC
- System and method for regulating a voltage signal23 Apr 2026US 2026/0112559 A1Resideo LLC
- Relay control apparatus and method11 May 2023US 2023/0146895 A1LG Energy Solution, Ltd.
- Systems and methods for providing open arc energy normalization30 Mar 2023US 2023/0096110 A1Rockwell Automation Technologies, Inc.
- Systems and methods for controlling relay activation timing10 Aug 2017US 2017/0229269 A1Control4 Corporation
Most cited
By later US patents
- Vital relay operating circuit10US 4,118,750 AGeneral Signal Corporation · 1978
- Coaxial cable switching circuit7US 4,271,403 AData 100 Corporation · 1981
- Tone operated switching arrangement6US 4,011,486 APylon Electronic Development Company Ltd. · 1977
- Remotely-controllable relays and filters therefor5US 4,232,298 AEnertec · 1980
- Control circuit for relay-operated gas valves4US 7,586,213 B2Honeywell International Inc. · 2009