H02P 1/34
By progressive reduction of impedance in secondary circuit
Official title: by progressive reduction of impedance in secondary circuit
H02P1/34 (By progressive reduction of impedance in secondary circuit) appears on 7 US grants and 3 published applications in this corpus.
Search patents in H02P- Granted patents
- 7
- Published applications
- 3
- Assignees
- 6
- Inventors
- 10
- Latest grant
- 11 Jan 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- System and method of predicting the presence of an out-of-step condition in a power system11 Jan 2022US 11,223,203 B2General Electric Technology GmbH
- Drive system for a ball mill and method for operating a ball mill20 Dec 2016US 9,522,400 B2Siemens Aktiengesellschaft
- Method and arrangement in connection with slip-ring machine16 May 2006US 7,045,987 B2ABB AB
- Dual stator winding induction machine drive5 Jun 2001US 6,242,884 B1Wisconsin Alumni Research Foundation
- Liquid rheostat with circulating electrolyte2 Jun 1987US 4,670,735 A
- Improvements in or relating to power systems7 Feb 2019US 2019/0044339 A1General Electric Technology GmbH
- Drive system for a ball mill and method for operating a ball mill12 Dec 2013US 2013/0327859 A1Siemens Aktiengesellschaft
- Method and arrangement in connection with slip-ring machine21 Apr 2005US 2005/0083009 A1ABB AB
Most cited
By later US patents
- Dual stator winding induction machine drive47US 6,242,884 B1Wisconsin Alumni Research Foundation · 2001
- Dynamoelectric machine8US 4,388,581 AGeneral Electric Company · 1983
- Liquid rheostat for starting an electric motor with improved sill structure3US 4,510,483 AElectricite de France (Service National) · 1985
- Method and arrangement in connection with slip-ring machine3US 7,045,987 B2ABB AB · 2006
- Liquid rheostat with circulating electrolyte2US 4,670,735 A1987