G01R 33/022
Measuring gradient
G01R33/022 (Measuring gradient) appears on 279 US grants and 248 published applications in this corpus.
Search patents in G01R- Granted patents
- 279
- Published applications
- 248
- Assignees
- 191
- Inventors
- 611
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 3 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 3 | 2 |
| 2008 | 2 | 4 |
| 2009 | 7 | 2 |
| 2010 | 0 | 5 |
| 2011 | 3 | 13 |
| 2012 | 4 | 6 |
| 2013 | 6 | 9 |
| 2014 | 6 | 2 |
| 2015 | 1 | 7 |
| 2016 | 6 | 8 |
| 2017 | 5 | 15 |
| 2018 | 6 | 17 |
| 2019 | 16 | 14 |
| 2020 | 24 | 20 |
| 2021 | 15 | 25 |
| 2022 | 23 | 22 |
| 2023 | 23 | 20 |
| 2024 | 19 | 17 |
| 2025 | 15 | 20 |
| 2026 | 5 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Biomagnetic field sensor systems and methods for diagnostic evaluation of cardiac conditions7 Jul 2026US 12,674,851 B2SB Technology, Inc.
- Using magnetic-sensor data to correct for INS drift5 May 2026US 12,618,677 B2Astra Navigation, Inc.
- Device and method for determining an orientation of a magnet, and a joystick14 Apr 2026US 12,601,794 B2Melexis Technologies SA
- Sensor localization in a magnetoencephalography (MEG) system3 Mar 2026US 12,564,331 B2FieldLine Inc.
- Systems and methods for magnetic susceptometry of devices with magnetometry20 Jan 2026US 12,529,725 B2New York University
- Method for rapid localization of dam leakage passage based on gradient measurement of total magnetic field1 Oct 2026US 2026/0298765 A1Central South University
- Magnetic field gradient sensor1 Oct 2026US 2026/0298970 A1Melexis Technologies SA
- Sensor localization in a magnetoencephalography (meg) system27 Aug 2026US 2026/0248408 A1FieldLine Inc.
- Device and method for determining an orientation of a magnet, and a joystick9 Jul 2026US 2026/0194605 A1Melexis Technologies SA
- System and method for an acoustically driven ferromagnetic resonance sensor device25 Jun 2026US 2026/0177647 A1Sonera Oy
Most cited
By later US patents
- Alternating and static magnetic field gradient measurements for distance and direction determination99US 5,305,212 AVector Magnetics, Inc. · 1994
- Method and systems for obtaining higher order gradiometer measurements with lower order gradiometers69US 5,657,756 ACTF Systems, Inc. · 1997
- Magnetic gradiometer incorporating global feedback64US 6,339,328 B12002
- System and method using magnetic anomaly field magnitudes for detection, localization, classification and tracking of magnetic objects63US 7,932,718 B1The United States of America as represented by the Secretary of the Navy · 2011
- Arrangement for magnetic field measurement59US 7,579,837 B2Siemens Aktiengesellschaft · 2009