H01H 33/161
Variable impedances
Official title: {Variable impedances}
H01H33/161 (Variable impedances) appears on 76 US grants and 41 published applications in this corpus.
Search patents in H01H- Granted patents
- 76
- Published applications
- 41
- Assignees
- 42
- Inventors
- 192
- Latest grant
- 8 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 4 | 2 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 2 | 3 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 3 | 4 |
| 2013 | 2 | 0 |
| 2014 | 2 | 3 |
| 2015 | 0 | 4 |
| 2016 | 2 | 1 |
| 2017 | 4 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 4 |
| 2021 | 3 | 0 |
| 2022 | 0 | 4 |
| 2023 | 1 | 1 |
| 2024 | 4 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Alternative gas current pause circuit interrupter8 Oct 2024US 12,112,905 B2Southern States, LLC
- Gas circuit breaker6 Aug 2024US 12,057,278 B2Mitsubishi Electric Corporation
- Switching device comprising two interrupter units connected in series6 Aug 2024US 12,057,279 B2Siemens Energy Global GmbH & Co. KG
- Breaking device30 Apr 2024US 11,972,915 B2Mitsubishi Electric Corporation
- Charging protection and regulation device for electron storage3 Oct 2023US 11,776,777 B2
- Switching device6 Feb 2025US 2025/0046547 A1Mitsubishi Electric Corporation
- Alternative gas current pause circuit interrupter23 May 2024US 2024/0170240 A1Soutern States, LLC
- Mechanical current cut-off device for high-voltage direct current with a capacitor in a secondary path, facility and method using such a device23 Mar 2023US 2023/0088430 A1Supergrid Institute
- Gas circuit breaker3 Nov 2022US 2022/0351925 A1Mitsubishi Electric Corporation
- Switching device comprising two interrupter units connected in series15 Sep 2022US 2022/0293369 A1Siemens Energy Global GmbH & Co. KG
Most cited
By later US patents
- Current limiting device117US 5,614,881 AGeneral Electric Company · 1997
- Fault current interrupter55US 4,583,146 AGeneral Electric Company · 1986
- Conductive liquid compositions and electrical circuit protection devices comprising conductive liquid compositions50US 5,581,192 AEaton Corporation · 1996
- Assemblies of PTC circuit protection devices48US 4,967,176 ARaychem Corporation · 1990
- Eddy current inductive drive electromechanical liner actuator and switching arrangement45US 7,777,600 B2PowerPath Technologies LLC · 2010