H01H 71/32
Having permanently magnetised part
Official title: having permanently magnetised part
H01H71/32 (Having permanently magnetised part) appears on 151 US grants and 97 published applications in this corpus.
Search patents in H01H- Granted patents
- 151
- Published applications
- 97
- Assignees
- 75
- Inventors
- 294
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 1 |
| 2004 | 1 | 2 |
| 2005 | 2 | 2 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 2 | 0 |
| 2009 | 1 | 4 |
| 2010 | 2 | 1 |
| 2011 | 2 | 3 |
| 2012 | 1 | 3 |
| 2013 | 3 | 3 |
| 2014 | 3 | 6 |
| 2015 | 3 | 7 |
| 2016 | 4 | 4 |
| 2017 | 6 | 3 |
| 2018 | 3 | 2 |
| 2019 | 5 | 6 |
| 2020 | 3 | 21 |
| 2021 | 21 | 11 |
| 2022 | 4 | 7 |
| 2023 | 7 | 3 |
| 2024 | 3 | 1 |
| 2025 | 3 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 71/321Characterised by the magnetic circuit or active magnetic elements81
- H01H 71/325Housings, assembly or disposition of different elements in the housing12
- H01H 2071/328Using a spring for having minimal force on armature while maximal forceIndexing code3
- H01H 71/327Manufacturing or calibrating methods3
Recent patents
- Electric-driven trip and reset mechanism and related leakage current protection device14 Oct 2025US 12,444,563 B2
- Opening and closing mechanism and leakage protection device26 Aug 2025US 12,401,178 B2Schneider Electric (Australia) PTY LTD
- Mobile application with combined breaker and relay19 Aug 2025US 12,394,976 B2Eaton Intelligent Power Limited
- Levitation fuse device12 Nov 2024US 12,142,444 B2Gigavac, LLC
- Smart circuit interrupter accessories internal component diagnostics7 May 2024US 11,978,607 B2Eaton Intelligent Power Limited
- Mobile application with combined breaker and relay29 Jan 2026US 2026/0031606 A1Eaton Intelligent Power Limited
- Actuator for a Circuit Breaker in a Switchgear15 Jan 2026US 2026/0018359 A1ABB Schweiz AG
- Electric-driven trip and reset mechanism and related leakage current protection device27 Feb 2025US 2025/0069838 A1
- Overcurrent protection device based on thermo magnetically-shiftable material10 Oct 2024US 2024/0339278 A1Centre National De La Recherche Scientifique
- Mobile application with combined breaker and relay19 Oct 2023US 2023/0335985 A1Eaton Intelligent Power Limited
Most cited
By later US patents
- Circuit breaker99US 5,581,219 AFuji Electric Co., Ltd. · 1996
- Trip actuator for molded case circuit breakers56US 4,679,019 AGeneral Electric Company · 1987
- Resettable switching device35US 6,975,191 B2Tripco Limited · 2005
- Adjustable flux transfer shunt trip actuator and electric power switch incorporating same34US 6,218,921 B1Eaton Corporation · 2001
- Combined trip unit and accessory module for electronic trip circuit breakers31US 4,700,161 AGeneral Electric Company · 1987