G01R 33/441
Nuclear quadrupole resonance [nqr] spectroscopy and imaging
Official title: {Nuclear Quadrupole Resonance [NQR] Spectroscopy and Imaging}
G01R33/441 (Nuclear quadrupole resonance [nqr] spectroscopy and imaging) appears on 154 US grants and 151 published applications in this corpus.
Search patents in G01R- Granted patents
- 154
- Published applications
- 151
- Assignees
- 77
- Inventors
- 277
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 1 |
| 2003 | 3 | 4 |
| 2004 | 3 | 5 |
| 2005 | 4 | 17 |
| 2006 | 7 | 16 |
| 2007 | 12 | 12 |
| 2008 | 12 | 9 |
| 2009 | 4 | 9 |
| 2010 | 10 | 4 |
| 2011 | 3 | 7 |
| 2012 | 3 | 14 |
| 2013 | 9 | 6 |
| 2014 | 10 | 6 |
| 2015 | 9 | 8 |
| 2016 | 2 | 1 |
| 2017 | 7 | 5 |
| 2018 | 3 | 2 |
| 2019 | 1 | 3 |
| 2020 | 4 | 5 |
| 2021 | 4 | 3 |
| 2022 | 4 | 2 |
| 2023 | 3 | 6 |
| 2024 | 3 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- RF material detection device with smart scanning multiple axis gimbal integrated with haptics5 Aug 2025US 12,379,439 B1Quantum IP, LLC
- Apparatus for the measurement of ore in mine ore benches6 Aug 2024US 12,055,502 B2Commonwealth Scientific and Industrial Research Organisation
- Cross-talk compensation for gradiometer probes23 Jul 2024US 12,044,793 B2Raytheon Company
- System for radio frequency illumination based temperature modulated-nuclear quadrupole resonance (TM-NQR) and signature detection of potential threat materials16 Jul 2024US 12,038,489 B2The Trustees of Princeton University
- Apparatus for the measurement of ore in mine haul vehicles29 Aug 2023US 11,740,191 B2Commonwealth Scientific and Industrial Research Organisation
- Nuclear quadrupole resonance spectrometer24 Sep 2026US 2026/0287694 A1Centre National De La Recherche Scientifique
- Method and apparatus for in vivo electric field imaging of neurons at low magnetic field strengths16 Jul 2026US 2026/0198827 A1Weinberg Medical Holdings, Inc.
- Digital Operation of a Magnetic Resonance System9 Apr 2026US 2026/0098925 A1Quantum Valley Investment Fund LP
- Digital Operation of a Magnetic Resonance System12 Feb 2026US 2026/0043880 A1Quantum Valley Investment Fund LP
- Rf material detection device with smart scanning multiple axis gimbal integrated with haptics5 Feb 2026US 2026/0036658 A1Quantum IP, LLC
Most cited
By later US patents
- Detection of explosive and narcotics by low power large sample volume nuclear quadrupole resonance (NQR)87US 5,233,300 AThe United States of America as represented by the Secretary of the Navy · 1993
- Detection of explosives by nuclear quadrupole resonance82US 5,206,592 A1993
- System and method for contraband detection using nuclear quadrupole resonance including a sheet coil and RF shielding via waveguide below cutoff76US 5,592,083 AQuantum Magnetics, Inc. · 1997
- Subfemtotesla radio-frequency atomic magnetometer for nuclear quadrupole resonance detection76US 7,521,928 B2The Trustees of Princeton University · 2009
- Radio-frequency coil array for resonance analysis72US 6,150,816 AAdvanced Imaging Research, Inc. · 2000