G01R 11/20
Compensating for phase errors in induction meters
G01R11/20 (Compensating for phase errors in induction meters) appears on 6 US grants and 2 published applications in this corpus.
Search patents in G01R- Granted patents
- 6
- Published applications
- 2
- Assignees
- 4
- Inventors
- 16
- Latest grant
- 7 Aug 2012
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 1 | 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 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Device and method of installing capacitors on a utility company's power meter7 Aug 2012US 8,235,747 B2
- Electricity metering with a current transformer15 Apr 2008US 7,359,809 B2Veris Industries, LLC
- System and method for digitally compensating frequency and temperature induced errors in amplitude and phase shift in current sensing of electronic energy meters9 Sep 2003US 6,618,684 B1Elster Electricity, LLC
- Watt hour meter registration calibration method and apparatus18 Jan 2000US 6,016,054 ASiemens Transmission & Distribution, LLC
- Phase lag and light-load adjust for voltage stator26 Jul 1988US 4,760,332 AGeneral Electric Company
Most cited
By later US patents
- Electricity metering with a current transformer55US 7,359,809 B2Veris Industries, LLC · 2008
- System and method for digitally compensating frequency and temperature induced errors in amplitude and phase shift in current sensing of electronic energy meters41US 6,618,684 B1Elster Electricity, LLC · 2003
- Phase lag adjustment in electric meter7US 4,649,337 AGeneral Electric Company · 1987
- Watt hour meter registration calibration method and apparatus4US 6,016,054 ASiemens Transmission & Distribution, LLC · 2000
- Device and method of installing capacitors on a utility company's power meter3US 8,235,747 B22012