H02K 47/30
Single-armature phase-number converters without frequency conversion
H02K47/30 (Single-armature phase-number converters without frequency conversion) appears on 12 US grants and 6 published applications in this corpus.
Search patents in H02K- Granted patents
- 12
- Published applications
- 6
- Assignees
- 7
- Inventors
- 19
- Latest grant
- 7 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 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 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Stator for rotary electric machine and rotary electric machine using same7 Nov 2023US 11,811,284 B2Hitachi Astemo, Ltd.
- Stator for rotary electric machine and rotary electric machine using same8 Feb 2022US 11,245,299 B2Hitachi Astemo, Ltd.
- Electrical energy transmission system27 Feb 2018US 9,906,032 B2GB Energy LLC
- Connecting system for connection of an electric machine to a converter6 Sep 2016US 9,438,094 B2ALSTOM Technology Ltd
- Rotating field transformer19 May 1998US 5,754,420 A
- Stator for Rotary Electric Machine and Rotary Electric Machine Using Same25 Jan 2024US 2024/0030770 A1Hitachi Astemo, Ltd.
- Stator for rotary electric machine and rotary electric machine using same21 Oct 2021US 2021/0328473 A1Hitachi Astemo, Ltd.
- Stator for Rotary Electric Machine and Rotary Electric Machine Using Same7 Feb 2019US 2019/0044403 A1Hitachi Automotive Systems, Ltd.
- Electrical energy transmission system29 Dec 2016US 2016/0380432 A1GB Energy LLC
- Connecting system for connection of an electric machine to a converter16 Oct 2014US 2014/0306558 A1ALSTOM Technology Ltd
Most cited
By later US patents
- Rotary phase converter having circuity for switching windings to provide reduced starting current with rapid, dependable starting24US 5,065,305 AArco Electric Products Corp. · 1991
- Rotary dynamoelectric machine having high-resistance rotor22US 4,158,225 ARonk Electrical Industries, Inc. · 1979
- Rotary phase converter19US 4,249,237 ARonk Electrical Industries, Inc. · 1981
- Rotary phase converter13US 4,079,446 ARonk Electrical Industries, Inc. · 1978
- Asynchronous intergrid transfer apparatus13US 5,608,615 A1997