H01H 2300/052
Controlling, signalling or testing correct functioning of a switch
H01H2300/052 (Controlling, signalling or testing correct functioning of a switch) appears on 109 US grants and 95 published applications in this corpus.
Search patents in H01H- Granted patents
- 109
- Published applications
- 95
- Assignees
- 69
- Inventors
- 245
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 3 | 6 |
| 2005 | 3 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 2 |
| 2014 | 1 | 5 |
| 2015 | 3 | 5 |
| 2016 | 2 | 2 |
| 2017 | 7 | 8 |
| 2018 | 4 | 4 |
| 2019 | 9 | 12 |
| 2020 | 8 | 4 |
| 2021 | 7 | 9 |
| 2022 | 3 | 6 |
| 2023 | 5 | 7 |
| 2024 | 9 | 4 |
| 2025 | 7 | 4 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Self-test auto monitor ground fault circuit interrupter (GFCI) with power denial6 Oct 2026US 12,754,232 B2Hubbell Incorporated
- Optical monitoring system for an optical display element3 Feb 2026US 12,542,248 B2ACD Antriebstechnik GmbH
- Energy storage status monitoring structure and rotary switch16 Dec 2025US 12,500,051 B2Huawei Digital Power Technologies Co., Ltd.
- Detecting welded relay contacts using contact close time measurement16 Sep 2025US 12,416,672 B2Rockwell Automation Technologies, Inc.
- Multi-voltage contactors, controls, and related methods2 Sep 2025US 12,406,820 B2Copeland Comfort Control LP
- Self-testing manual initiating device11 Jun 2026US 2026/0162519 A1Honeywell International Inc.
- Ground fault detection circuit breaker7 May 2026US 2026/0128248 A1
- Systems and methods for using capacitive sensing to debounce a mechanical button30 Apr 2026US 2026/0120977 A1Bose Corporation
- Circuit breaker12 Mar 2026US 2026/0074135 A1Schneider Electric Industries SAS
- Fast trigger for keyboard analog switch5 Mar 2026US 2026/0066197 A1Logitech Europe S. A.
Most cited
By later US patents
- Magnetically-damped, testable accelerometer48US 4,827,091 AAutomotive Systems Laboratory, Inc. · 1989
- Accelerometer with dual-magnet sensing mass43US 4,933,515 AAutomotive Systems Laboratory, Inc. · 1990
- Temperature-dependent switch having a contact bridge37US 5,973,587 A1999
- Impact sensor for vehicle safety restraint system20US 5,485,041 A1996
- Earth leakage detection device17US 6,784,770 B2General Electric Company · 2004