G01P 3/565
By measuring or by comparing the phase of generated current or voltage
Official title: {by measuring or by comparing the phase of generated current or voltage (phase comparators per se H03D13/00; phase measurement G01R25/00)}
G01P3/565 (By measuring or by comparing the phase of generated current or voltage) appears on 15 US grants and 2 published applications in this corpus.
Search patents in G01P- Granted patents
- 15
- Published applications
- 2
- Assignees
- 14
- Inventors
- 22
- Latest grant
- 19 Jun 2001
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 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 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Phase difference detecting apparatus and wheelchair using the same19 Jun 2001US 6,247,716 B1Kabushiki Kaisha TEC
- Continuously variable transmission belt ratio measurement system10 May 1994US 5,310,384 ABorg-Warner Automotive, Inc.
- Composite power shaft with intrinsic parameter measurability20 Jul 1993US 5,228,349 ASimmonds Precision Products, Inc.
- Shaft torque measurement26 Nov 1991US 5,067,355 AGeneral Electric Company
- Method for detecting changes in spin rate of a missile in flight19 Nov 1991US 5,065,956 ARaytheon Company
Most cited
By later US patents
- Position detecting system63US 4,112,365 AEaton Corporation · 1978
- Shaft torque measurement26US 5,067,355 AGeneral Electric Company · 1991
- Composite power shaft with intrinsic parameter measurability25US 5,228,349 ASimmonds Precision Products, Inc. · 1993
- Apparatus for measuring the direction and relative position between a body and a pick-up using a magnetoresistive pick up21US 3,993,946 ASony Corporation · 1976
- Method and apparatus for measuring angular displacement15US 4,691,192 A1987