H01F 7/1872
Bistable or bidirectional current devices
Official title: {Bistable or bidirectional current devices (relays H01H47/226)}
H01F7/1872 (Bistable or bidirectional current devices) appears on 33 US grants and 25 published applications in this corpus.
Search patents in H01F- Granted patents
- 33
- Published applications
- 25
- Assignees
- 36
- Inventors
- 79
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 2 | 2 |
| 2016 | 1 | 1 |
| 2017 | 2 | 0 |
| 2018 | 1 | 4 |
| 2019 | 3 | 0 |
| 2020 | 0 | 5 |
| 2021 | 2 | 0 |
| 2022 | 2 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Metamaterial and metadamper7 Jul 2026US 12,676,257 B2The Royal Institution for the Advancement of Learning/Mcgill University
- Control circuit and control method of bistable permanent magnet mechanism11 Nov 2025US 12,469,627 B2Schneider Electric (China) Co., Ltd.
- Ballistic unipolar bistable actuator23 May 2023US 11,657,943 B2Moving Magnet Technologies
- Bistable hoisting solenoid8 Nov 2022US 11,495,380 B2Rhefor Gbr
- Bistable solenoid valve device, and method for monitoring it22 Feb 2022US 11,255,455 B2Zf Cv Systems Europe BV
- Charging Socket for a Motor Vehicle, and Motor Vehicle Equipped Therewith14 May 2026US 2026/0131675 A1Bayerische Motoren Werke Aktiengesellschaft
- H-bridge-based solenoid30 Apr 2026US 2026/0120930 A1Halliburton Energy Services.Inc.
- Control circuit and control method of bistable permanent magnet mechanism13 Mar 2025US 2025/0087398 A1Schnelder Electric (China) Co., Ltd.
- Metamaterial and metadamper25 Apr 2024US 2024/0136100 A1The Royal Institution for the Advancement of Learning/Mcgill University
- Ballistic unipolar bistable actuator6 Jan 2022US 2022/0005639 A1Moving Magnet Technologies
Most cited
By later US patents
- Integrated latching actuators68US 4,409,638 A1983
- Control circuit for an electric door strike using a latching solenoid46US 6,021,038 AHanchett Entry Systems, Inc. · 2000
- Electromagnet access control circuit36US 4,682,801 ASecuritron Magnalock Corporation · 1987
- Fuel injection apparatus33US 3,942,485 AHitachi, Ltd. · 1976
- Device for operating latching solenoids31US 6,154,354 A2000