G01P 3/49
Using eddy currents
Official title: using eddy currents
G01P3/49 (Using eddy currents) appears on 82 US grants and 62 published applications in this corpus.
Search patents in G01P- Granted patents
- 82
- Published applications
- 62
- Assignees
- 70
- Inventors
- 177
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 1 |
| 2003 | 1 | 4 |
| 2004 | 0 | 1 |
| 2005 | 5 | 5 |
| 2006 | 2 | 3 |
| 2007 | 2 | 2 |
| 2008 | 2 | 1 |
| 2009 | 0 | 5 |
| 2010 | 3 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 3 |
| 2015 | 1 | 7 |
| 2016 | 2 | 1 |
| 2017 | 4 | 3 |
| 2018 | 1 | 6 |
| 2019 | 5 | 3 |
| 2020 | 5 | 4 |
| 2021 | 2 | 2 |
| 2022 | 3 | 2 |
| 2023 | 2 | 0 |
| 2024 | 1 | 3 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pulse wheel for measuring the revolution of a wheel of a vehicle and system for determining the speed of a vehicle21 Apr 2026US 12,607,646 B2K.W.H. Ciclosport Vertriebs GmbH
- Motion, vibration and aberrant condition detection and analysis7 May 2024US 11,977,096 B2Baker Hughes Oilfield Operations LLC
- Proximity sensor to sense rotating shaft position and velocity19 Sep 2023US 11,761,794 B2Hamilton Sundstrand Corporation
- System and method for monitoring one or more parameters of a top drive with a single sensor10 Jan 2023US 11,549,960 B2
- Method and device for determining a speed by means of an inductive speed sensor20 Dec 2022US 11,531,040 B2KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
- Vehicular device, program, and vehicular system2 Jan 2025US 2025/0004005 A1Denso Corporation
- Integrated machine speed signal waveform capture19 Dec 2024US 2024/0418099 A1Woodward, Inc.
- Pulse wheel for measuring the revolution of a wheel of a vehicle and system for determining the speed of a vehicle12 Dec 2024US 2024/0410912 A1K.W.H. Ciclosport Vertriebs GmbH
- Improved motion, vibration and aberrant condition detection and analysis for rotating shafts, reciprocating machines, turbomachinery, pipes, pipelines, and related machinery22 Aug 2024US 2024/0280603 A1Baker Hughes Oilfield Operations LLC
- Proximity sensor to sense rotating shaft position and velocity13 Oct 2022US 2022/0326051 A1Hamilton Sundstrand Corporation
Most cited
By later US patents
- Device for measuring the motion of a conducting body through magnetic induction85US 6,850,053 B2Siemens Aktiengesellschaft · 2005
- Eddy current sensor76US 3,932,813 ASimmonds Precision Products, Inc. · 1976
- System for sensing the position of a rotating steel shaft including a track formed by a strip having discontinuous electrical properties, and a method of manufacturing such a track54US 5,200,698 AGEC Alsthom SA · 1993
- Shielded eddy current sensor for enhanced sensitivity43US 5,942,893 AGeneral Dynamics Advanced Technology Systems, Inc. · 1999
- Inductive speed sensor employing phase shift28US 4,947,116 AHamilton Standard Controls, Inc. · 1990