H01H 50/22
Wherein the magnetic circuit is substantially closed
Official title: wherein the magnetic circuit is substantially closed
H01H50/22 (Wherein the magnetic circuit is substantially closed) appears on 58 US grants and 48 published applications in this corpus.
Search patents in H01H- Granted patents
- 58
- Published applications
- 48
- Assignees
- 39
- Inventors
- 142
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 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 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 1 |
| 2005 | 2 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 2 | 6 |
| 2013 | 4 | 2 |
| 2014 | 3 | 2 |
| 2015 | 2 | 5 |
| 2016 | 3 | 6 |
| 2017 | 3 | 2 |
| 2018 | 6 | 0 |
| 2019 | 1 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 3 |
| 2023 | 1 | 2 |
| 2024 | 3 | 2 |
| 2025 | 3 | 1 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electromagnetic switch having display light25 Nov 2025US 12,482,613 B2
- Contactor arrangement for extinguishing an electric arc7 Oct 2025US 12,437,947 B2Tyco Electronics (Shanghai) Co., Ltd.
- Contact apparatus and electromagnetic switch14 Jan 2025US 12,198,881 B2Huawei Digital Power Technologies Co., Ltd.
- High-voltage direct-current magnetic latching relay with sensitive response3 Sep 2024US 12,080,501 B2Xiamen Mongfa Electric Power Controls Co., Ltd.
- Computer-implemented method for assisting a user in interacting with an electronic relay for electric power distribution grids16 Apr 2024US 11,961,292 B2ABB AB
- Contactor Static Contact, Static Contact Assembly and Contactor13 Aug 2026US 2026/0237581 A1Tyco Electronics (Shanghai) Co., Ltd.
- Electromagnetic driving unit and relay7 May 2026US 2026/0128246 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
- Contactor magnetic core, contactor electromagnetic assembly and contactor16 Apr 2026US 2026/0106099 A1Tyco Electronics (Shanghai) Co., Ltd.
- Electromagnetic switch having display light27 Feb 2025US 2025/0069824 A1
- Contactor14 Mar 2024US 2024/0087826 A1Tyco Electronics (Shanghai) Co., Ltd.
Most cited
By later US patents
- Electromagnetic switching apparatus68US 6,911,884 B2Matsushita Electric Works, Ltd. · 2005
- Method and system of controlling asynchronous contactors for a multi-phase electric load35US 7,224,557 B2Eaton Corporation · 2007
- Electromagnetic contactor having improved structure and assembly27US 4,760,364 AEaton Corporation · 1988
- Electromagnetic formed contact surface24US 6,853,276 B22005
- Electromagnet for electric switching device22US 4,577,174 ASquare D Starkstrom GmbH · 1986