H01H 50/36
Stationary parts of magnetic circuit
Official title: Stationary parts of magnetic circuit, e.g. yoke
H01H50/36 (Stationary parts of magnetic circuit) appears on 493 US grants and 552 published applications in this corpus.
Search patents in H01H- Granted patents
- 493
- Published applications
- 552
- Assignees
- 174
- Inventors
- 874
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 5 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 5 | 5 |
| 2003 | 2 | 5 |
| 2004 | 6 | 6 |
| 2005 | 5 | 2 |
| 2006 | 1 | 5 |
| 2007 | 3 | 5 |
| 2008 | 2 | 3 |
| 2009 | 3 | 9 |
| 2010 | 1 | 4 |
| 2011 | 6 | 2 |
| 2012 | 11 | 4 |
| 2013 | 4 | 24 |
| 2014 | 8 | 15 |
| 2015 | 21 | 33 |
| 2016 | 25 | 44 |
| 2017 | 40 | 34 |
| 2018 | 25 | 30 |
| 2019 | 33 | 41 |
| 2020 | 26 | 39 |
| 2021 | 30 | 42 |
| 2022 | 47 | 38 |
| 2023 | 34 | 51 |
| 2024 | 36 | 52 |
| 2025 | 37 | 33 |
| 2026 | 30 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 50/38Part of main magnetic circuit shaped to suppress arcing between the contacts127
- H01H 50/42Auxiliary magnetic circuits90
- H01H 50/40Branched or multiple-limb main magnetic circuits39
- H01H 2050/367Methods for joining separate core and l-shaped yokeIndexing code25
- H01H 2050/362Part of the magnetic circuit conducts current to be switched or coilIndexing code15
- H01H 2050/365Formed from a single sheet of magnetic material by punching, bending, plyingIndexing code9
Recent patents
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- Magnetic latching relay25 Aug 2026US 12,719,002 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- High-voltage contactor or high-voltage relay1 Oct 2026US 2026/0302115 A1Pierburg GmbH
- Safety switch17 Sep 2026US 2026/0279712 A1Keyence Corporation
- Switching device27 Aug 2026US 2026/0253825 A1Ellenberger & Poensgen GmbH
- Magnetic circuit system with enhanced intial electromagnetic attraction and high-voltage dc relay20 Aug 2026US 2026/0245820 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
- Relay comprising arc induction shield structure13 Aug 2026US 2026/0237582 A1Ls E-Mobility Solutions Co., Ltd.
Most cited
By later US patents
- Electromagnetic switching apparatus68US 6,911,884 B2Matsushita Electric Works, Ltd. · 2005
- Contact device63US 8,138,872 B2OMRON Corporation · 2012
- Microrelay and a method for producing the same53US 5,398,011 ASharp Kabushiki Kaisha · 1995
- Electromagnetic relay52US 8,138,863 B2OMRON Corporation · 2012
- Single-pole, single current path switching system and method34US 9,726,726 B2Rockwell Automation Technologies, Inc. · 2017