G01R 33/38
Systems for generation, homogenisation or stabilisation of the main or gradient magnetic
Official title: Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
G01R33/38 (Systems for generation, homogenisation or stabilisation of the main or gradient magnetic) appears on 4,270 US grants and 3,654 published applications in this corpus.
Search patents in G01R- Granted patents
- 4,270
- Published applications
- 3,654
- Assignees
- 785
- Inventors
- 4,707
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 8 | 0 |
| 1984 | 11 | 0 |
| 1985 | 16 | 0 |
| 1986 | 34 | 0 |
| 1987 | 58 | 0 |
| 1988 | 49 | 0 |
| 1989 | 63 | 0 |
| 1990 | 42 | 0 |
| 1991 | 50 | 0 |
| 1992 | 51 | 0 |
| 1993 | 53 | 0 |
| 1994 | 97 | 0 |
| 1995 | 75 | 0 |
| 1996 | 90 | 0 |
| 1997 | 80 | 0 |
| 1998 | 55 | 0 |
| 1999 | 64 | 0 |
| 2000 | 82 | 0 |
| 2001 | 97 | 19 |
| 2002 | 87 | 75 |
| 2003 | 94 | 80 |
| 2004 | 102 | 93 |
| 2005 | 95 | 124 |
| 2006 | 87 | 106 |
| 2007 | 95 | 136 |
| 2008 | 97 | 125 |
| 2009 | 115 | 133 |
| 2010 | 77 | 114 |
| 2011 | 86 | 111 |
| 2012 | 74 | 119 |
| 2013 | 91 | 139 |
| 2014 | 102 | 137 |
| 2015 | 76 | 251 |
| 2016 | 98 | 192 |
| 2017 | 174 | 226 |
| 2018 | 215 | 178 |
| 2019 | 282 | 184 |
| 2020 | 248 | 214 |
| 2021 | 178 | 193 |
| 2022 | 180 | 176 |
| 2023 | 164 | 141 |
| 2024 | 128 | 141 |
| 2025 | 131 | 149 |
| 2026 | 93 | 98 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01R 33/385Using gradient magnetic field coils1,649
- G01R 33/381Using electromagnets1,279
- G01R 33/387Compensation of inhomogeneities956
- G01R 33/383Using permanent magnets687
- G01R 33/3806Open magnet assemblies for improved access to the sample683
- G01R 33/3804Additional hardware for cooling or heating of the magnet assembly, for housing459
- G01R 33/3802Manufacture or installation of magnet assemblies357
- G01R 33/3808Magnet assemblies for single-sided mr wherein the magnet assembly is located on279
All 9 subgroupsShow fewer
Recent patents
- Magnetic resonance imaging with machine-learning based shim settings6 Oct 2026US 12,754,266 B2Koninklijke Philips N. V.
- Device and method for prospective correction for gradient pulse shape distortions in MRI imaging6 Oct 2026US 12,754,273 B2Koninklijke Philips N. V.
- Granulated particle for cold storage material particle, cold storage material particle, cold storage device, refrigerator, cryopump superconducting magnet, nuclear magnetic resonance imaging apparatus, nuclear magnetic resonance apparatus, magnetic field application type single crystal pulling apparatus, and helium re-condensing device29 Sep 2026US 12,747,380 B2Niterra Materials Co., Ltd.
- Magnetic resonance imaging apparatus provided with a magnetic assembly29 Sep 2026US 12,748,168 B2Multiwave Technologies AG
- Shimming device for a magnetic resonance imaging system29 Sep 2026US 12,748,169 B2Shanghai United Imaging Healthcare Co., Ltd.
- Device for microwave measurement of a dielectric discontinuity of a material8 Oct 2026US 2026/0305968 A1Ubt S.R.L
- Superconducting magnet apparatus and magnetic resonance imaging apparatus8 Oct 2026US 2026/0309819 A1Canon Medical Systems Corporation
- Method for Operating a Magnetic Resonance Device, Magnetic Resonance Device, Computer Program and Storage Medium8 Oct 2026US 2026/0309820 A1Siemens Healthineers AG
- Container for superconducting wire connection and superconducting magnet8 Oct 2026US 2026/0312307 A1Canon Kabushiki Kaisha
- Receive coil device and magnetic resonance imaging apparatus1 Oct 2026US 2026/0299057 A1FUJIFILM Corporation
Most cited
By later US patents
- Magnetic resonance imaging method and apparatus for guiding invasive therapy553US 5,647,361 AFonar Corporation · 1997
- System and method for image guidance during medical procedures338US 8,812,077 B2ViewRay Incorporated · 2014
- Surgical procedure with magnetic resonance imaging266US 5,735,278 ANational Research Council of Canada · 1998
- Diagnosis apparatus and the determination of tissue structure and quality261US 4,543,959 AInstrumentarium Corp. · 1985
- Power amplifier with multiple switched output stages, and method and driver for operating same228US 5,949,668 ASiemens Aktiengesellschaft · 1999