G01R 33/3642
Mutual coupling or decoupling of multiple coils
Official title: {Mutual coupling or decoupling of multiple coils, e.g. decoupling of a receive coil from a transmission coil, or intentional coupling of RF coils, e.g. for RF magnetic field amplification}
G01R33/3642 (Mutual coupling or decoupling of multiple coils) appears on 739 US grants and 703 published applications in this corpus.
Search patents in G01R- Granted patents
- 739
- Published applications
- 703
- Assignees
- 256
- Inventors
- 1,106
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 11 | 0 |
| 1989 | 11 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 13 | 0 |
| 1995 | 11 | 0 |
| 1996 | 12 | 0 |
| 1997 | 8 | 0 |
| 1998 | 2 | 0 |
| 1999 | 9 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 1 |
| 2002 | 9 | 8 |
| 2003 | 10 | 11 |
| 2004 | 12 | 11 |
| 2005 | 9 | 15 |
| 2006 | 10 | 12 |
| 2007 | 13 | 30 |
| 2008 | 13 | 30 |
| 2009 | 25 | 41 |
| 2010 | 28 | 26 |
| 2011 | 32 | 22 |
| 2012 | 14 | 34 |
| 2013 | 16 | 33 |
| 2014 | 23 | 27 |
| 2015 | 16 | 39 |
| 2016 | 25 | 28 |
| 2017 | 35 | 36 |
| 2018 | 37 | 52 |
| 2019 | 55 | 54 |
| 2020 | 67 | 37 |
| 2021 | 44 | 40 |
| 2022 | 38 | 27 |
| 2023 | 30 | 29 |
| 2024 | 23 | 22 |
| 2025 | 19 | 26 |
| 2026 | 15 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Built-in coil current sensing for 1H/23NA MRI1 Sep 2026US 12,724,094 B2Imam Abdulrahman Bin Faisal University
- Magnetic resonance imaging apparatus18 Aug 2026US 12,710,494 B2FUJIFILM Corporation
- Electromagnetic shielding for magnetic resonance imaging methods and apparatus7 Jul 2026US 12,672,791 B2Hyperfine Operations, Inc.
- Radio frequency coil array for use in a combined linear accelerator and magnetic resonance imaging system (Linac-MR/MR-Linac) and a Linac-MR/MR-Linac incorporating the same9 Jun 2026US 12,650,481 B2Alberta Health Services
- Magnetic field enhancement component and magnetic field enhancement device9 Jun 2026US 12,650,482 B2Beijing Tsinghua Changgung Hospital
- Wireless coils, magnetic resonance imaging systems including the same, and control methods for the magnetic resonance imaging24 Sep 2026US 2026/0287692 A1Shanghai United Imaging Healthcare Co., Ltd.
- Mri rf coil comprising a multi-element channel structure and method for using the same17 Sep 2026US 2026/0276762 A1Quality Electrodynamics, LLC
- Radio frequency receiver coil with electronic fuse10 Sep 2026US 2026/0266936 A1Koninklijke Philips N. V.
- Radio frequency receiver, magnetic imaging system and method13 Aug 2026US 2026/0238243 A1Koninklijke Philips N. V.
- Mems based electro-optical mri coil tuner16 Jul 2026US 2026/0202496 A1Bogazici Universitesi
Most cited
By later US patents
- Method of internal magnetic resonance imaging and spectroscopic analysis and associated apparatus268US 5,699,801 AThe Johns Hopkins University · 1997
- Miniature magnetic resonance catheter coils and related methods234US 6,263,229 B1The Johns Hopkins University School of Medicine · 2001
- Biopsy and sampling needle antennas for magnetic resonance imaging-guided biopsies218US 7,236,816 B2The Johns Hopkins University · 2007
- Intracavity probe and interface device for MRI imaging and spectroscopy163US 5,476,095 AMedrad, Inc. · 1995
- Breast coil for magnetic resonance imaging135US 5,363,845 AMedical Advances, Inc. · 1994