G01R 33/381
Using electromagnets
Official title: using electromagnets
G01R33/381 (Using electromagnets) appears on 1,279 US grants and 1,163 published applications in this corpus.
Search patents in G01R- Granted patents
- 1,279
- Published applications
- 1,163
- Assignees
- 296
- Inventors
- 1,529
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 21 | 0 |
| 1988 | 14 | 0 |
| 1989 | 24 | 0 |
| 1990 | 14 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 12 | 0 |
| 1994 | 20 | 0 |
| 1995 | 24 | 0 |
| 1996 | 29 | 0 |
| 1997 | 23 | 0 |
| 1998 | 20 | 0 |
| 1999 | 23 | 0 |
| 2000 | 26 | 0 |
| 2001 | 21 | 4 |
| 2002 | 14 | 19 |
| 2003 | 17 | 19 |
| 2004 | 25 | 21 |
| 2005 | 26 | 37 |
| 2006 | 24 | 38 |
| 2007 | 28 | 56 |
| 2008 | 31 | 44 |
| 2009 | 43 | 57 |
| 2010 | 26 | 40 |
| 2011 | 35 | 39 |
| 2012 | 32 | 45 |
| 2013 | 33 | 33 |
| 2014 | 35 | 40 |
| 2015 | 34 | 55 |
| 2016 | 28 | 72 |
| 2017 | 57 | 65 |
| 2018 | 68 | 56 |
| 2019 | 61 | 52 |
| 2020 | 66 | 70 |
| 2021 | 50 | 58 |
| 2022 | 67 | 71 |
| 2023 | 57 | 38 |
| 2024 | 42 | 43 |
| 2025 | 31 | 53 |
| 2026 | 28 | 38 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Superconducting magnet and MRI apparatus22 Sep 2026US 12,742,843 B2Canon Kabushiki Kaisha
- Magnetic resonance imaging apparatus and method of controlling superconducting magnet8 Sep 2026US 12,730,168 B2Canon Kabushiki Kaisha
- Hotspot monitoring system for superconducting device18 Aug 2026US 12,710,316 B2Ecole Polytechnique Federale De Lausanne (Epfl)
- Control system for charging of non/partially insulated superconducting magnets and related techniques18 Aug 2026US 12,712,103 B2Massachusetts Institute of Technology
- Variable thermal conductance link for superconducting persistent current switch for fast magnet ramping11 Aug 2026US 12,704,571 B2Synaptive Medical Incl
- 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
- Container for superconducting wire connection and superconducting magnet8 Oct 2026US 2026/0312307 A1Canon Kabushiki Kaisha
- Superconducting magnet and magnetic resonance imaging apparatus1 Oct 2026US 2026/0299065 A1Canon Medical Systems Corporation
- Superconducting coil device, magnetic resonance imaging apparatus including the same, and temperature management method of superconducting coil device1 Oct 2026US 2026/0302026 A1FUJIFILM Corporation
Most cited
By later US patents
- Diagnosis apparatus and the determination of tissue structure and quality261US 4,543,959 AInstrumentarium Corp. · 1985
- Integrated high-frequency generator system utilizing the magnetic field of the target application219US 8,786,284 B2Bridge12 Technologies, Inc. · 2014
- Simultaneous acquisition of spatial harmonics (SMASH): ultra-fast imaging with radiofrequency coil arrays139US 5,910,728 ABeth Israel Deaconess Medical Center, Inc. · 1999
- Magnetic resonance system138US 4,875,485 AKabushiki Kaisha Toshiba · 1989
- Low field magnetic resonance imaging methods and apparatus120US 9,817,093 B2Hyperfine Research, Inc. · 2017