H01H 47/22
Circuit arrangements not adapted to a particular application of the relay and
Official title: for supplying energising current for relay coil
H01H47/22 (Circuit arrangements not adapted to a particular application of the relay and) appears on 996 US grants and 778 published applications in this corpus.
Search patents in H01H- Granted patents
- 996
- Published applications
- 778
- Assignees
- 491
- Inventors
- 1,943
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 13 | 0 |
| 1982 | 10 | 0 |
| 1983 | 9 | 0 |
| 1984 | 10 | 0 |
| 1985 | 17 | 0 |
| 1986 | 13 | 0 |
| 1987 | 16 | 0 |
| 1988 | 15 | 0 |
| 1989 | 15 | 0 |
| 1990 | 13 | 0 |
| 1991 | 11 | 0 |
| 1992 | 16 | 0 |
| 1993 | 16 | 0 |
| 1994 | 14 | 0 |
| 1995 | 21 | 0 |
| 1996 | 18 | 0 |
| 1997 | 14 | 0 |
| 1998 | 21 | 0 |
| 1999 | 21 | 0 |
| 2000 | 10 | 0 |
| 2001 | 20 | 3 |
| 2002 | 11 | 7 |
| 2003 | 13 | 12 |
| 2004 | 10 | 12 |
| 2005 | 10 | 14 |
| 2006 | 8 | 22 |
| 2007 | 12 | 8 |
| 2008 | 6 | 18 |
| 2009 | 11 | 18 |
| 2010 | 13 | 20 |
| 2011 | 13 | 16 |
| 2012 | 11 | 20 |
| 2013 | 18 | 32 |
| 2014 | 20 | 38 |
| 2015 | 29 | 70 |
| 2016 | 30 | 55 |
| 2017 | 46 | 48 |
| 2018 | 51 | 61 |
| 2019 | 75 | 39 |
| 2020 | 48 | 41 |
| 2021 | 40 | 48 |
| 2022 | 55 | 48 |
| 2023 | 33 | 37 |
| 2024 | 43 | 31 |
| 2025 | 31 | 30 |
| 2026 | 15 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 47/32Energising current supplied by semiconductor device556
- H01H 47/226For bistable relays111
- H01H 47/223Adapted to be supplied by ac66
- H01H 47/24Having light-sensitive input43
- H01H 47/26Having thermo-sensitive input38
- H01H 47/36Relay coil or coils forming part of a bridge circuit6
- H01H 47/28Energising current supplied by discharge tube1
- H01H 47/34Energising current supplied by magnetic amplifier0
Recent patents
- Relay circuit board29 Sep 2026US 12,749,639 B2Avary Holding (Shenzhen) Co., Limited.
- Switch arrangement and method for operating a switch arrangement25 Aug 2026US 12,718,999 B2Siemens Aktiengesellschaft
- Driver for driving an electromechanical device28 Jul 2026US 12,695,039 B2Renesas Electronics America Inc.
- Apparatus and method for monitoring status of relay circuit16 Jun 2026US 12,658,391 B2Samsung SDI.Co., Ltd.
- Safety switch with an electromagnetic lock mechanism16 Jun 2026US 12,658,394 B2Keyence Corporation
- Safety switch17 Sep 2026US 2026/0279712 A1Keyence Corporation
- High-Power Solid-State Relay with Pin Diode20 Aug 2026US 2026/0245818 A1Southwest Research Institute
- Circuit protection scheme for electrical power systems20 Aug 2026US 2026/0246258 A1Tesla, Inc.
- Selectable shunt voltage for circuit breaker6 Aug 2026US 2026/0229872 A1Vertiv Corporation
- Circuit breaker23 Jul 2026US 2026/0213102 A1Ellenberger & Poensgen GmbH
Most cited
By later US patents
- Method and apparatus for inductive load control with current simulation1,009US 5,038,247 ADelco Electronics Corporation · 1991
- Electromagnetic actuator889US 6,366,441 B1Honda Giken Kogyo Kabushiki Kaisha · 2002
- Time-delay outdoor lighting control systems307US 4,991,054 APacific Scientific Company · 1991
- Wireless network control for building lighting system149US 7,623,042 B2The Regents of the University of California · 2009
- Pulse width modulated solenoid driver controller140US 5,621,603 AUnited Technologies Corporation · 1997