H01F 6/00
Superconducting magnets
Official title: Superconducting magnets; Superconducting coils {(magnetic resonance assemblies using superconducting coil systems G01R33/3815)}
H01F6/00 (Superconducting magnets) appears on 1,865 US grants and 1,703 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,865
- Published applications
- 1,703
- Assignees
- 610
- Inventors
- 3,116
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 9 | 0 |
| 1982 | 8 | 0 |
| 1983 | 16 | 0 |
| 1984 | 11 | 0 |
| 1985 | 16 | 0 |
| 1986 | 16 | 0 |
| 1987 | 25 | 0 |
| 1988 | 16 | 0 |
| 1989 | 19 | 0 |
| 1990 | 33 | 0 |
| 1991 | 24 | 0 |
| 1992 | 37 | 0 |
| 1993 | 31 | 0 |
| 1994 | 42 | 0 |
| 1995 | 41 | 0 |
| 1996 | 37 | 0 |
| 1997 | 38 | 0 |
| 1998 | 27 | 0 |
| 1999 | 28 | 0 |
| 2000 | 30 | 0 |
| 2001 | 21 | 3 |
| 2002 | 26 | 20 |
| 2003 | 23 | 24 |
| 2004 | 24 | 31 |
| 2005 | 25 | 32 |
| 2006 | 29 | 46 |
| 2007 | 25 | 49 |
| 2008 | 24 | 50 |
| 2009 | 35 | 70 |
| 2010 | 26 | 60 |
| 2011 | 45 | 57 |
| 2012 | 59 | 53 |
| 2013 | 55 | 56 |
| 2014 | 49 | 62 |
| 2015 | 55 | 79 |
| 2016 | 41 | 92 |
| 2017 | 75 | 100 |
| 2018 | 82 | 83 |
| 2019 | 83 | 84 |
| 2020 | 76 | 104 |
| 2021 | 66 | 114 |
| 2022 | 82 | 98 |
| 2023 | 88 | 92 |
| 2024 | 87 | 93 |
| 2025 | 69 | 71 |
| 2026 | 54 | 80 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01F 6/06Coils1,041
- H01F 6/04Cooling617
- H01F 6/02Quenching208
- H01F 6/006Supplying energising or de-energising current156
- H01F 2006/001Constructive details of inductive current limitersIndexing code82
- H01F 6/003Methods and means for discharging superconductive storage33
- H01F 6/005Processes or means for increasing the stored energy in superconductive coils by32
Recent patents
- HTS magnet ramping to reduce screening currents29 Sep 2026US 12,749,605 B2Tokamak Energy Ltd
- Supplemental cooling system for superconducting electrical machine15 Sep 2026US 12,738,401 B2GE Precision Healthcare LLC
- Magnetic resonance imaging apparatus and method of controlling superconducting magnet8 Sep 2026US 12,730,168 B2Canon Kabushiki Kaisha
- Superconductor current limiting device and aircraft comprising such a device8 Sep 2026US 12,731,983 B2Airbus SAS
- Transport current saturated HTS magnets1 Sep 2026US 12,725,722 B2Tokamak Energy Ltd
- Superconducting magnet apparatus and magnetic resonance imaging apparatus8 Oct 2026US 2026/0309819 A1Canon Medical Systems Corporation
- 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
- Iron core-equipped superconducting magnet, accelerator including iron core-equipped superconducting magnet, and particle beam therapy apparatus including accelerator1 Oct 2026US 2026/0302027 A1Hitachi High-Tech Corporation
- Low loss superconductor electrical cable1 Oct 2026US 2026/0302028 A1Tokamak Energy Ltd
Most cited
By later US patents
- Thermoelectric method and apparatus for charging superconducting magnets187US 5,565,763 ALockheed Martin Corporation · 1996
- Inductive quench for magnet protection149US 7,701,677 B2Massachusetts Institute of Technology · 2010
- Passive fault current limiting device93US 5,892,644 AThe University of Chicago · 1999
- Superconducting quick switch90US 8,384,504 B2Quantum Design International, Inc. · 2013
- Superconducting quick switch86US 8,134,434 B2Quantum Design, Inc. · 2012