G01R 33/4831
Using b1 gradients
Official title: {using B1 gradients, e.g. rotating frame techniques, use of surface coils}
G01R33/4831 (Using b1 gradients) appears on 58 US grants and 52 published applications in this corpus.
Search patents in G01R- Granted patents
- 58
- Published applications
- 52
- Assignees
- 38
- Inventors
- 137
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 3 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 3 |
| 2011 | 1 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 7 |
| 2016 | 0 | 2 |
| 2017 | 2 | 2 |
| 2018 | 3 | 2 |
| 2019 | 6 | 7 |
| 2020 | 5 | 2 |
| 2021 | 4 | 3 |
| 2022 | 1 | 1 |
| 2023 | 4 | 4 |
| 2024 | 1 | 4 |
| 2025 | 2 | 0 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Real time monitoring and prediction of motion in MRI23 Jun 2026US 12,663,493 B2Oregon Health & Science University
- System and method for RF based frequency encoding using injection transformers for simultaneous transmit and receive26 May 2026US 12,638,531 B2Case Western Reserve University
- Systems and methods for radio frequency (RF) based spatial encoding in magnetic resonance imaging using frequency-modulated RF pulses12 May 2026US 12,625,209 B2Regents of the University of Minnesota
- B1 field map with contrast medium injection10 Mar 2026US 12,571,862 B2Siemens Healthineers AG
- Multi-echo radio frequency (RF) based spatial encoding in magnetic resonance imaging using frequency-modulated RF pulses29 Jul 2025US 12,372,595 B2Regents of the University of Minnesota
- Systems and methods for radio frequency (rf) based spatial encoding in magnetic resonance imaging using frequency-modulated rf pulses20 Aug 2026US 2026/0243856 A1
- Rapid simultaneous b0 and b1 mapping for magnetic resonance imaging12 Mar 2026US 2026/0072114 A1GE Precision Healthcare LLC
- System and method for rf based frequency encoding using injection transformers for simultaneous transmit and receive21 Nov 2024US 2024/0385268 A1Case Western Reserve University
- Real time monitoring and prediction of motion in mri10 Oct 2024US 2024/0337718 A1Oregon Health & Science University
- Systems and methods for radio frequency (rf) based spatial encoding in magnetic resonance imaging using frequency-modulated rf pulses4 Jul 2024US 2024/0219496 A1Regents of the University of Minnesota
Most cited
By later US patents
- NMR spectroscopy body probes with at least one surface coil48US 4,636,730 AGeneral Electric Company · 1987
- Nuclear magnetic resonance apparatus having semitoroidal rf coil for use in topical NMR and NMR imaging26US 4,590,427 AThe United States of America as represented by the United States Department of Energy · 1986
- Multicoil NMR data acquisition and processing methods23US 7,466,128 B2Vista Clara Inc. · 2008
- Apparatus and method for measuring cased hole fluid flow with NMR22US 7,372,263 B2Baker Hughes Incorporated · 2008
- Method and apparatus for obtaining N.M.R. spectra and coils for use therein16US 4,728,896 AOxford Research Systems Limited · 1988