H01H 33/6644
Having coil-like electrical connections between contact rod and the proper contact
Official title: {having coil-like electrical connections between contact rod and the proper contact}
H01H33/6644 (Having coil-like electrical connections between contact rod and the proper contact) appears on 88 US grants and 34 published applications in this corpus.
Search patents in H01H- Granted patents
- 88
- Published applications
- 34
- Assignees
- 31
- Inventors
- 149
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 0 |
| 2006 | 0 | 3 |
| 2007 | 2 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 2 | 2 |
| 2011 | 0 | 2 |
| 2012 | 4 | 3 |
| 2013 | 1 | 2 |
| 2014 | 4 | 3 |
| 2015 | 2 | 3 |
| 2016 | 4 | 3 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 3 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vacuum interrupter25 Aug 2026US 12,718,998 B2Mitsubishi Electric Corporation
- Vacuum interrupter22 Apr 2025US 12,283,444 B2Mitsubishi Electric Corporation
- Vacuum interrupter and vacuum breaker31 Oct 2023US 11,804,346 B2Meidensha Corporation
- Vacuum arc extinguishing chamber contact, vacuum arc extinguishing chamber and vacuum circuit breaker11 May 2021US 11,004,632 B1Beijing Orient Vacuum Electric Co., Ltd.
- Coil-type axial magnetic field contact assembly for vacuum interrupter6 Oct 2020US 10,796,867 B1Eaton Intelligent Power Limited
- Vacuum interrupter11 Jul 2024US 2024/0234059 A1Mitsubishi Electric Corporation
- Vacuum valve8 Jun 2023US 2023/0178315 A1Mitsubishi Electric Corporation
- Vacuum interrupter18 May 2023US 2023/0154705 A1Mitsubishi Electric Corporation
- Vacuum interrupter and vacuum breaker20 Apr 2023US 2023/0118133 A1Meidensha Corporation
- Vacuum Circuit Interrupter with Actuation Having Active Damping27 Feb 2020US 2020/0066468 A1Eaton Intelligent Power Limited
Most cited
By later US patents
- Vacuum interrupter29US 3,946,179 ATokyo Shibaura Electric Co., Ltd. · 1976
- Vacuum interrupter28US 4,588,879 AKabushika Kaisha Meidensha · 1986
- Vacuum interrupter with a radial magnetic field27US 5,438,174 AEaton Corporation · 1995
- Cylindrical coil and contact support for vacuum interrupter27US 5,804,788 AEaton Corporation · 1998
- Vacuum type circuit interrupter with a contact having integral axial magnetic field means24US 4,117,288 AWestinghouse Electric Corp. · 1978