G01R 33/422
Of the radio frequency field
Official title: of the radio frequency field
G01R33/422 (Of the radio frequency field) appears on 469 US grants and 449 published applications in this corpus.
Search patents in G01R- Granted patents
- 469
- Published applications
- 449
- Assignees
- 152
- Inventors
- 759
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 9 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 13 | 0 |
| 1995 | 9 | 0 |
| 1996 | 12 | 0 |
| 1997 | 7 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 7 |
| 2003 | 4 | 5 |
| 2004 | 5 | 7 |
| 2005 | 5 | 15 |
| 2006 | 10 | 13 |
| 2007 | 12 | 15 |
| 2008 | 13 | 20 |
| 2009 | 14 | 9 |
| 2010 | 7 | 16 |
| 2011 | 7 | 9 |
| 2012 | 7 | 19 |
| 2013 | 8 | 20 |
| 2014 | 11 | 14 |
| 2015 | 9 | 18 |
| 2016 | 13 | 23 |
| 2017 | 16 | 22 |
| 2018 | 18 | 29 |
| 2019 | 42 | 41 |
| 2020 | 40 | 40 |
| 2021 | 35 | 25 |
| 2022 | 26 | 27 |
| 2023 | 17 | 23 |
| 2024 | 20 | 16 |
| 2025 | 21 | 9 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electromagnetic shielding for magnetic resonance imaging methods and apparatus7 Jul 2026US 12,672,791 B2Hyperfine Operations, Inc.
- Magnetic resonance apparatus for detecting at least one property of a sample16 Jun 2026US 12,656,282 B2Siemens Healthineers AG
- Examination room shileds and imaging systems16 Jun 2026US 12,656,424 B2Shanghai United Imaging Healthcare Co., Ltd.
- Radio frequency coil with T-shaped connector between electrical conductors and radio frequency shield5 May 2026US 12,618,923 B2Koninklijke Philips N. V.
- Radiation therapy system and method13 Jan 2026US 12,521,570 B2Shanghai United Imaging Healthcare Co., Ltd.
- Volume coil for a magnetic resonance imaging system6 Aug 2026US 2026/0227471 A1Koninklijke Philips N. V.
- Combined Imaging Apparatus with a Position-Determining Unit16 Jul 2026US 2026/0198878 A1Siemens Healthineers AG
- Radiofrequency Shielding Facility for a Dedicated Magnetic Resonance Device11 Jun 2026US 2026/0157632 A1Siemens Healthineers AG
- Electromagnetically shielded electronic assembly for noise reduction during magnetic resonance imaging28 May 2026US 2026/0147074 A1Innovere Medical Inc.
- Methods and apparatus for patient positioning in magnetic resonance imaging26 Mar 2026US 2026/0083343 A1Hyperfine Operations, Inc.
Most cited
By later US patents
- Magnetic resonance (MR) angiography using a faraday catheter236US 5,419,325 AGeneral Electric Company · 1995
- Cable guide for a nuclear magnetic resonance tomography apparatus195US 5,065,760 ASiemens Aktiengesellschaft · 1991
- Breast coil for magnetic resonance imaging135US 5,363,845 AMedical Advances, Inc. · 1994
- Birdcage-like transmitting antenna for MRI135US 7,990,146 B2Siemens Aktiengesellschaft · 2011
- Method of obtaining information of a specified or target area of a living body near its skin surface by the application of a nuclear magnetic resonance phenomenon123US 4,240,439 AHokkaido University · 1980