H01H 50/00
Details of electromagnetic relays
Official title: Details of electromagnetic relays ({H01H51/28 takes precedence;} electric circuit arrangements H01H47/00; details of electrically-operated selector switches H01H63/00)
H01H50/00 (Details of electromagnetic relays) appears on 3,350 US grants and 2,771 published applications in this corpus.
Search patents in H01H- Granted patents
- 3,350
- Published applications
- 2,771
- Assignees
- 895
- Inventors
- 4,719
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 38 | 0 |
| 1977 | 45 | 0 |
| 1978 | 31 | 0 |
| 1979 | 21 | 0 |
| 1980 | 26 | 0 |
| 1981 | 28 | 0 |
| 1982 | 40 | 0 |
| 1983 | 30 | 0 |
| 1984 | 44 | 0 |
| 1985 | 59 | 0 |
| 1986 | 53 | 0 |
| 1987 | 50 | 0 |
| 1988 | 32 | 0 |
| 1989 | 39 | 0 |
| 1990 | 41 | 0 |
| 1991 | 54 | 0 |
| 1992 | 38 | 0 |
| 1993 | 44 | 0 |
| 1994 | 37 | 0 |
| 1995 | 30 | 0 |
| 1996 | 34 | 0 |
| 1997 | 37 | 0 |
| 1998 | 35 | 0 |
| 1999 | 64 | 0 |
| 2000 | 55 | 0 |
| 2001 | 53 | 12 |
| 2002 | 58 | 60 |
| 2003 | 49 | 71 |
| 2004 | 64 | 56 |
| 2005 | 55 | 63 |
| 2006 | 44 | 60 |
| 2007 | 43 | 45 |
| 2008 | 32 | 58 |
| 2009 | 40 | 64 |
| 2010 | 51 | 70 |
| 2011 | 54 | 56 |
| 2012 | 89 | 99 |
| 2013 | 100 | 123 |
| 2014 | 81 | 127 |
| 2015 | 104 | 170 |
| 2016 | 135 | 169 |
| 2017 | 151 | 120 |
| 2018 | 125 | 134 |
| 2019 | 129 | 139 |
| 2020 | 126 | 192 |
| 2021 | 147 | 147 |
| 2022 | 142 | 155 |
| 2023 | 142 | 161 |
| 2024 | 125 | 168 |
| 2025 | 120 | 135 |
| 2026 | 86 | 117 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 50/16Magnetic circuit arrangements1,408
- H01H 50/54Contact arrangements1,386
- H01H 50/02Bases1,332
- H01H 50/44Magnetic coils or windings530
- H01H 50/64Driving arrangements between movable part of magnetic circuit and contact510
- H01H 50/14Terminal arrangements464
- H01H 50/005Details of electromagnetic relays: using micromechanics188
- H01H 50/12Ventilating147
Recent patents
- Electromagnetic relay6 Oct 2026US 12,755,916 B2OMRON Corporation
- Relay circuit board29 Sep 2026US 12,749,639 B2Avary Holding (Shenzhen) Co., Limited.
- Electromagnetic relay29 Sep 2026US 12,749,640 B2OMRON Corporation
- High-voltage DC relay22 Sep 2026US 12,744,174 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Arc path formation unit and direct current relay comprising same22 Sep 2026US 12,744,175 B2Ls Electric Co., Ltd.
- Relay8 Oct 2026US 2026/0311945 A1Sensata Technologies (Wuhu) Co., Ltd.
- Electromagnetic contactor having structure for improving operation performance8 Oct 2026US 2026/0311946 A1Ls E-Mobility Solutions Co., Ltd.
- Contactor1 Oct 2026US 2026/0302114 A1Schneider Electric Industries SAS
- High-voltage contactor or high-voltage relay1 Oct 2026US 2026/0302115 A1Pierburg GmbH
- Relay1 Oct 2026US 2026/0302116 A1Sensata Technologies (Wuhu) Co., Ltd.
Most cited
By later US patents
- Electromagnetically driven microactuated device and method of making the same188US 6,116,863 AUniversity of Cincinnati · 2000
- Miniature inductor for integrated circuits and devices167US 5,070,317 A1991
- Micromachining methods for making micromechanical moving structures including multiple contact switching system127US 5,454,904 AGeneral Electric Company · 1995
- Micro-electromechanical relays117US 6,094,116 ACalifornia Institute of Technology · 2000
- Micromechanical magnetically actuated devices104US 5,644,177 AWisconsin Alumni Research Foundation · 1997