H01H 33/168
The impedance being inserted both while closing and while opening the switch
Official title: {the impedance being inserted both while closing and while opening the switch}
H01H33/168 (The impedance being inserted both while closing and while opening the switch) appears on 22 US grants and 10 published applications in this corpus.
Search patents in H01H- Granted patents
- 22
- Published applications
- 10
- Assignees
- 18
- Inventors
- 71
- Latest grant
- 8 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 2 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Alternative gas current pause circuit interrupter8 Oct 2024US 12,112,905 B2Southern States, LLC
- High-voltage power switch with closing resistor arrangement21 Feb 2023US 11,587,748 B2Siemens Energy Global GmbH & Co. KG
- High voltage circuit breaker26 Mar 2019US 10,242,832 B2Siemens Aktiengesellschaft
- Vacuum capacitor switch with pre-insertion contact1 Jan 2019US 10,170,255 B1
- Supporting structure of closing resistor unit for circuit breaker11 Apr 2017US 9,620,314 B2Lsis Co., Ltd.
- Alternative gas current pause circuit interrupter23 May 2024US 2024/0170240 A1Soutern States, LLC
- High-voltage power switch with closing resistor arrangement17 Jun 2021US 2021/0183598 A1Siemens Aktiengesellschaft
- On-load tap changing apparatus and on-load tap changing system6 Feb 2020US 2020/0043650 A1Kabushiki Kaisha Toshiba
- High voltage circuit breaker28 Dec 2017US 2017/0372859 A1Siemens Aktiengesellschaft
- Supporting structure of closing resistor unit for circuit breaker11 Feb 2016US 2016/0042895 A1Lsis Co., Ltd.
Most cited
By later US patents
- Circuit breaker and driving mechanism thereof14US 5,451,731 AMitsubishi Denki Kabushiki Kaisha · 1995
- Pressurized gas circuit-breaker having opening and closing resistors12US 4,439,651 AAlsthom-Atlantique · 1984
- Resistor-provided UHV breaker having delaying/operating mechanism for making and breaking main contacts and resistor contacts7US 5,424,504 AKabushiki Kaisha Toshiba · 1995
- Hybrid circuit breaker6US 4,617,435 AKabushiki Kaisha Toshiba · 1986
- Vacuum capacitor switch with pre-insertion contact5US 10,170,255 B12019