H02P 1/20
By progressive reduction of resistance in series with armature winding
Official title: by progressive reduction of resistance in series with armature winding
H02P1/20 (By progressive reduction of resistance in series with armature winding) appears on 5 US grants and 5 published applications in this corpus.
Search patents in H02P- Granted patents
- 5
- Published applications
- 5
- Assignees
- 5
- Inventors
- 17
- Latest grant
- 1 Jan 2013
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 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 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Engine starter and resistor short-circuiting device1 Jan 2013US 8,344,530 B2Mitsubishi Electric Corporation
- Control circuit for an arrangement having at least two direct current motors that are connectable in parallel to a direct voltage system2 Feb 2010US 7,656,107 B2Robert Bosch GmbH
- Rotary electrical hand-tool device and startup safety routine24 Feb 2004US 6,697,570 B2Hilti Aktiengesellschaft
- Electric motor starting circuit31 Dec 1991US 5,077,823 ACFR Corporation
- Electronic control system for motors and the like27 Dec 1977US 4,065,804 A
- Assembly for controlling an electric vacuum pump26 Dec 2013US 2013/0342147 A1Continental Automotive GmbH
- Method and device for operating a starter of a vehicle5 Sep 2013US 2013/0229019 A1
- Engine starter and resistor short-circuiting device28 Apr 2011US 2011/0095545 A1Mitsubishi Electric Corporation
- Control Circuit for an Arrangement Having at Least Two Direct Current Motors that are Connectable in Parallel to a Direct Voltage System14 Aug 2008US 2008/0191647 A1Robert Bosch GmbH
- Rotary electrical hand-tool device and startup safety routine15 Aug 2002US 2002/0110371 A1Hilti Aktiengesellschaft
Most cited
By later US patents
- Electronic control system for motors and the like14US 4,065,804 A1977
- Electric motor starting circuit6US 5,077,823 ACFR Corporation · 1991
- Engine starter and resistor short-circuiting device3US 8,344,530 B2Mitsubishi Electric Corporation · 2013
- Rotary electrical hand-tool device and startup safety routine2US 6,697,570 B2Hilti Aktiengesellschaft · 2004