G01R 33/04
Using the flux-gate principle
Official title: using the flux-gate principle
G01R33/04 (Using the flux-gate principle) appears on 432 US grants and 357 published applications in this corpus.
Search patents in G01R- Granted patents
- 432
- Published applications
- 357
- Assignees
- 268
- Inventors
- 832
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 10 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 9 | 0 |
| 2002 | 8 | 4 |
| 2003 | 4 | 9 |
| 2004 | 6 | 9 |
| 2005 | 5 | 9 |
| 2006 | 10 | 11 |
| 2007 | 9 | 17 |
| 2008 | 17 | 9 |
| 2009 | 9 | 17 |
| 2010 | 12 | 10 |
| 2011 | 11 | 13 |
| 2012 | 8 | 14 |
| 2013 | 4 | 11 |
| 2014 | 18 | 24 |
| 2015 | 11 | 18 |
| 2016 | 23 | 18 |
| 2017 | 25 | 32 |
| 2018 | 15 | 21 |
| 2019 | 19 | 21 |
| 2020 | 18 | 17 |
| 2021 | 19 | 18 |
| 2022 | 20 | 17 |
| 2023 | 20 | 13 |
| 2024 | 15 | 17 |
| 2025 | 11 | 6 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ring core current transducer for flux detection8 Sep 2026US 12,730,161 B2Danisense A/S
- Magnetic detection device28 Jul 2026US 12,693,349 B2Optohub Co., Ltd
- Excitation circuit, current sensor, and measuring device14 Jul 2026US 12,681,111 B2Hioki E. E. Corporation
- Signal processing methods and systems for biomagnetic field imaging9 Jun 2026US 12,648,726 B2SB Technology, Inc.
- Method for estimating noise of soft magnetic core6 Jan 2026US 12,517,192 B1Aerospace Information Research Institute, Chinese Academy of Sciences
- Signal Processing Methods and Systems for Biomagnetic Field Imaging1 Oct 2026US 2026/0294306 A1SB Technology, Inc.
- Method for estimating noise of soft magnetic core8 Jan 2026US 2026/0009869 A1Aerospace Information Research Institute, Chinese Academy of Sciences
- Systems and Methods for Biomagnetic Field Imaging21 Aug 2025US 2025/0261890 A1SB Technology, Inc.
- Detection method, system, and storage medium for fluxgate sensor noise5 Jun 2025US 2025/0180619 A1Institute of Geology and Geophysics, Chinese Academy of Sciences
- Excitation circuit, current sensor, and measuring device15 May 2025US 2025/0155527 A1Hioki E. E. Corporation
Most cited
By later US patents
- Magnetic field sensor135US 7,038,448 B2Sentron AG · 2006
- Magnetometer circuitry for use in bore hole detection of AC magnetic fields78US 4,845,434 AVector Magnetics, Inc. · 1989
- Magnetic sensor apparatus, current sensor apparatus and magnetic sensor element75US 6,323,634 B1TDK Corporation · 2001
- Magnetic field sensor and method for operating the magnetic field sensor71US 7,259,556 B2Melexis Technologies SA · 2007
- Magnetic detector instrument with board-mounted sensor assembly56US 4,536,710 ASchonstedt Instrument Company · 1985