G01R 33/443
Assessment of an electric or a magnetic field
Official title: {Assessment of an electric or a magnetic field, e.g. spatial mapping, determination of a B0 drift or dosimetry}
G01R33/443 (Assessment of an electric or a magnetic field) appears on 141 US grants and 162 published applications in this corpus.
Search patents in G01R- Granted patents
- 141
- Published applications
- 162
- Assignees
- 73
- Inventors
- 366
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 5 |
| 2011 | 2 | 2 |
| 2012 | 1 | 5 |
| 2013 | 3 | 5 |
| 2014 | 4 | 10 |
| 2015 | 1 | 13 |
| 2016 | 4 | 1 |
| 2017 | 8 | 13 |
| 2018 | 10 | 15 |
| 2019 | 18 | 30 |
| 2020 | 25 | 8 |
| 2021 | 19 | 12 |
| 2022 | 12 | 9 |
| 2023 | 5 | 6 |
| 2024 | 3 | 7 |
| 2025 | 13 | 9 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Diffusion mapping by MR fingerprinting11 Aug 2026US 12,704,575 B2Koninklijke Philips N. V.
- Optimizing a pulse sequence using an optimization map14 Jul 2026US 12,681,115 B2Siemens Healthineers AG
- Sensor element, test device, and method for testing a data carrier having a spin resonance feature24 Mar 2026US 12,586,435 B2Giesecke+Devrient Currency Technology GmbH
- Method and system for quantitative susceptibility mapping reconstruction in low-field magnetic resonance imaging (MRI) system23 Dec 2025US 12,504,493 B2Tata Consultancy Services Limited
- Magnetic resonance simulation apparatus, magnetic resonance simulation method, and computer-readable nonvolatile storage medium storing magnetic resonance simulation program4 Nov 2025US 12,461,176 B2Canon Medical Systems Corporation
- Magnetic resonance imaging apparatus and magnetic resonance imaging method17 Sep 2026US 2026/0276767 A1Canon Medical Systems Corporation
- Mr imaging using partial echo acquisition27 Aug 2026US 2026/0251741 A1Koninklijke Philips N. V.
- Magnetic resonance sequence with free excitation pulse and form-bound refocusing pulses30 Jul 2026US 2026/0219346 A1
- Deep learning enabled b0 mapping23 Jul 2026US 2026/0211067 A1Siemens Healthineers AG
- Rf transmit and receiver antenna detector system11 Jun 2026US 2026/0160840 A1Quantum IP, LLC
Most cited
By later US patents
- Nuclear magnetic resonance pulse sequences for use with borehole logging tools181US 5,023,551 ASchlumberger-Doll Research · 1991
- Borehole measurement of NMR characteristics of earth formations141US 5,055,787 ASchlumberger Technology Corporation · 1991
- Borehole measurement of NMR characteristics of earth formations106US 5,055,788 ASchlumberger Technology Corporation · 1991
- B1 mapping in MRI system using k-space spatial frequency domain filtering22US 8,077,955 B2Kabushiki Kaisha Toshiba · 2011
- Three-dimensional detection, dosimetry and imaging of an energy field by formation of a polymer in a gel17US 5,633,584 AYale University · 1997