H01H 83/226
With differential transformer
Official title: {with differential transformer}
H01H83/226 (With differential transformer) appears on 77 US grants and 67 published applications in this corpus.
Search patents in H01H- Granted patents
- 77
- Published applications
- 67
- Assignees
- 42
- Inventors
- 163
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 5 |
| 2004 | 1 | 2 |
| 2005 | 4 | 1 |
| 2006 | 2 | 3 |
| 2007 | 2 | 1 |
| 2008 | 2 | 4 |
| 2009 | 1 | 0 |
| 2010 | 2 | 5 |
| 2011 | 2 | 2 |
| 2012 | 6 | 2 |
| 2013 | 1 | 3 |
| 2014 | 2 | 0 |
| 2015 | 2 | 5 |
| 2016 | 2 | 2 |
| 2017 | 1 | 3 |
| 2018 | 3 | 3 |
| 2019 | 5 | 6 |
| 2020 | 4 | 3 |
| 2021 | 5 | 3 |
| 2022 | 2 | 2 |
| 2023 | 3 | 0 |
| 2024 | 1 | 6 |
| 2025 | 2 | 3 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Circuit breaker11 Aug 2026US 12,706,258 B2Siemens Aktiengesellschaft
- Protective wiring device11 Aug 2026US 12,706,266 B2Pass & Seymour, Inc.
- Electronic switching protection apparatus without generating an electric arc17 Mar 2026US 12,580,379 B2Hager Electro
- Plug-in summation current transformer module, rail-mounted device, and assembly method7 Oct 2025US 12,437,950 B2Siemens Aktiengesellschaft
- Resetting RCD mechanism by the handle20 May 2025US 12,308,193 B2Schneider Electric Industries SAS
- System on sensor electrical protective device30 Jul 2026US 2026/0221365 A1Schneider Electric USA, Inc.
- Combined leakage protection device7 May 2026US 2026/0128247 A1
- Circuit breaker and method25 Dec 2025US 2025/0391619 A1Siemens Aktiengesellschaft
- Residual current operated device with all-current sensitive detection of differential currents and charging plug, in-cable control box, charging cable and charger therewith6 Nov 2025US 2025/0341547 A1Magnetec Corporation
- Electrical protection device configured to automatically determine a cause of an electrical circuit opening and associated method6 Feb 2025US 2025/0046557 A1Schneider Electric Industries SAS
Most cited
By later US patents
- Two pole ground fault circuit breaker54US 4,641,217 AGeneral Electric Company · 1987
- Dual wound trip solenoid54US 5,260,676 AWestinghouse Electric Corp. · 1993
- Modular ground fault circuit breaker47US 4,686,600 AGeneral Electric Company · 1987
- Electric circuit interrupter45US 6,515,564 B2Eagle Electric Manufacturing Co., Inc. · 2003
- Earth leakage circuit breaker assembly34US 5,920,451 ACarlingswitch, Inc. · 1999