H02P 27/048
Using ac supply for only the rotor circuit or only the stator
Official title: using AC supply for only the rotor circuit or only the stator circuit
H02P27/048 (Using ac supply for only the rotor circuit or only the stator) appears on 37 US grants and 14 published applications in this corpus.
Search patents in H02P- Granted patents
- 37
- Published applications
- 14
- Assignees
- 23
- Inventors
- 82
- Latest grant
- 7 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Alternating power supply circuit of and alternating power supply method for long stator linear motor1 Oct 2026US 2026/0302992 A1Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd.
- Magnetic flux estimate10 Mar 2022US 2022/0077801 A1Schneider Toshiba Inverter Europe SAS
- Motor control device20 Dec 2018US 2018/0367079 A1Franklin Electric Co., Inc.
- Start control apparatus for engine generator22 Nov 2012US 2012/0291739 A1Honda Motor Co., Ltd.
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Most cited
By later US patents
- Means for stabilizing an a-c electric motor drive system108US 4,088,934 AGeneral Electric Company · 1978
- Adjustable speed drive for single-phase induction motors58US 6,570,778 B2Wisconsin Alumni Research Foundation · 2003
- Method and apparatus for controlling AC motor39US 4,451,112 AHitachi, Ltd. · 1984
- Method and apparatus for controlling an alternating current motor load using plural controlled-current inverter circuits33US 4,349,772 AGeneral Electric Company · 1982
- Apparatus for controlling AC motor32US 4,451,771 AHitachi, Ltd. · 1984