G01R 33/32
Excitation or detection systems
Official title: Excitation or detection systems, e.g. using radio frequency signals
G01R33/32 (Excitation or detection systems) appears on 5,076 US grants and 4,901 published applications in this corpus.
Search patents in G01R- Granted patents
- 5,076
- Published applications
- 4,901
- Assignees
- 1,029
- Inventors
- 6,150
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 7 | 0 |
| 1983 | 8 | 0 |
| 1984 | 11 | 0 |
| 1985 | 7 | 0 |
| 1986 | 24 | 0 |
| 1987 | 57 | 0 |
| 1988 | 71 | 0 |
| 1989 | 64 | 0 |
| 1990 | 44 | 0 |
| 1991 | 50 | 0 |
| 1992 | 49 | 0 |
| 1993 | 57 | 0 |
| 1994 | 68 | 0 |
| 1995 | 64 | 0 |
| 1996 | 65 | 0 |
| 1997 | 58 | 0 |
| 1998 | 32 | 0 |
| 1999 | 41 | 0 |
| 2000 | 56 | 0 |
| 2001 | 69 | 21 |
| 2002 | 75 | 76 |
| 2003 | 73 | 104 |
| 2004 | 100 | 94 |
| 2005 | 86 | 137 |
| 2006 | 116 | 140 |
| 2007 | 118 | 138 |
| 2008 | 115 | 203 |
| 2009 | 133 | 193 |
| 2010 | 143 | 202 |
| 2011 | 138 | 150 |
| 2012 | 131 | 193 |
| 2013 | 132 | 260 |
| 2014 | 145 | 232 |
| 2015 | 126 | 328 |
| 2016 | 167 | 234 |
| 2017 | 276 | 239 |
| 2018 | 264 | 263 |
| 2019 | 359 | 260 |
| 2020 | 301 | 268 |
| 2021 | 248 | 241 |
| 2022 | 244 | 217 |
| 2023 | 199 | 188 |
| 2024 | 175 | 207 |
| 2025 | 160 | 201 |
| 2026 | 131 | 112 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cooling apparatus for a control unit of a magnetic resonance device6 Oct 2026US 12,754,263 B2Siemens Healthineers AG
- Birdcage resonator for high resolution NMR applications6 Oct 2026US 12,754,264 B2Quad Systems Corporation
- Radio frequency receiver array for magnetic resonance imaging6 Oct 2026US 12,754,265 B2Koninklijke Philips N. V.
- Reception cable and medical image diagnostic system6 Oct 2026US 12,755,867 B2FUJIFILM Corporation
- Magnetic field enhancement assembly and magnetic field enhancement device29 Sep 2026US 12,748,167 B2Beijing Tsinghua Changgung Hospital
- Improved spectrometer or imaging assembly1 Oct 2026US 2026/0299058 A1Npl Management Limited
- Blanket-type coil unit and coil system1 Oct 2026US 2026/0299059 A1FUJIFILM Corporation
- Blanket-type coil unit and coil system1 Oct 2026US 2026/0299060 A1FUJIFILM Corporation
- Coil system1 Oct 2026US 2026/0299061 A1FUJIFILM Corporation
- Magnetic resonance imaging apparatus1 Oct 2026US 2026/0299062 A1Canon Medical Systems Corporation
Most cited
By later US patents
- Methods for in vivo magnetic resonance imaging462US 6,549,800 B1Johns Hopkins Unversity School of Medicine · 2003
- Magnetic-resonance-guided imaging, electrophysiology, and ablation335US 6,701,176 B1The Johns Hopkins University School of Medicine · 2004
- Systems and methods for evaluating the urethra and the periurethral tissues305US 6,898,454 B2Surgi-Vision, Inc. · 2005
- Method of magnetic resonance imaging and spectroscopic analysis and associated apparatus employing a loopless antenna299US 5,928,145 AThe Johns Hopkins University · 1999
- Apparatus, systems, and methods for in vivo magnetic resonance imaging277US 6,628,980 B2Surgi-Vision, Inc. · 2003