G01R 33/44
Using nuclear magnetic resonance [nmr]
Official title: using nuclear magnetic resonance [NMR] (G01R33/24, G01R33/62 take precedence)
G01R33/44 (Using nuclear magnetic resonance [nmr]) appears on 12,777 US grants and 12,976 published applications in this corpus.
Search patents in G01R- Granted patents
- 12,777
- Published applications
- 12,976
- Assignees
- 2,475
- Inventors
- 15,334
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 13 | 0 |
| 1982 | 14 | 0 |
| 1983 | 15 | 0 |
| 1984 | 26 | 0 |
| 1985 | 51 | 0 |
| 1986 | 71 | 0 |
| 1987 | 148 | 0 |
| 1988 | 126 | 0 |
| 1989 | 126 | 0 |
| 1990 | 107 | 0 |
| 1991 | 132 | 0 |
| 1992 | 123 | 0 |
| 1993 | 158 | 0 |
| 1994 | 187 | 0 |
| 1995 | 119 | 0 |
| 1996 | 162 | 0 |
| 1997 | 125 | 0 |
| 1998 | 126 | 0 |
| 1999 | 97 | 0 |
| 2000 | 156 | 0 |
| 2001 | 172 | 59 |
| 2002 | 195 | 194 |
| 2003 | 196 | 252 |
| 2004 | 192 | 211 |
| 2005 | 165 | 294 |
| 2006 | 193 | 271 |
| 2007 | 202 | 317 |
| 2008 | 234 | 433 |
| 2009 | 248 | 427 |
| 2010 | 301 | 518 |
| 2011 | 286 | 460 |
| 2012 | 348 | 499 |
| 2013 | 412 | 620 |
| 2014 | 408 | 654 |
| 2015 | 374 | 841 |
| 2016 | 457 | 713 |
| 2017 | 637 | 722 |
| 2018 | 668 | 743 |
| 2019 | 960 | 731 |
| 2020 | 848 | 719 |
| 2021 | 646 | 634 |
| 2022 | 610 | 654 |
| 2023 | 530 | 590 |
| 2024 | 535 | 549 |
| 2025 | 506 | 536 |
| 2026 | 346 | 335 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01R 33/48Nmr imaging systems11,444
- G01R 33/46Nmr spectroscopy1,157
- G01R 33/445Mr involving a non-standard magnetic field b0442
- G01R 33/448Relaxometry, i.e. quantification of relaxation times or spin density383
- G01R 33/446Multifrequency selective rf pulses178
- G01R 33/441Nuclear quadrupole resonance [nqr] spectroscopy and imaging154
- G01R 33/443Assessment of an electric or a magnetic field141
Recent patents
- Recommender system using cognitive pre-testing to select optimal MRI scanning tasks6 Oct 2026US 12,751,624 B2Koninklijke Philips N. V.
- Systems and methods for image acquisition6 Oct 2026US 12,751,683 B2Shanghai United Imaging Healthcare Co., Ltd.
- NMR characterization of modified drilling fluids6 Oct 2026US 12,754,154 B2Schlumberger Technology Corporation
- Magnetic resonance imaging with machine-learning based shim settings6 Oct 2026US 12,754,266 B2Koninklijke Philips N. V.
- System and method for generating water-fat separated image6 Oct 2026US 12,754,267 B2GE Precision Healthcare LLC
- Systems and methods for cardiovascular magnetic resonance imaging8 Oct 2026US 2026/0305946 A1Ohio State Innovation Foundation
- Lumbar-vertebra magnetic resonance imaging method and apparatus, computer device, readable storage medium, and program product8 Oct 2026US 2026/0305970 A1Hainan General Hospital
- Method for Operating a Magnetic Resonance Device, Magnetic Resonance Device, Computer Program and Storage Medium8 Oct 2026US 2026/0309820 A1Siemens Healthineers AG
- Interface for a medical imaging system8 Oct 2026US 2026/0309821 A1Koninklijke Philips N. V.
- Magnetic resonance imaging apparatus, image processing apparatus, image processing method, and program8 Oct 2026US 2026/0309822 A1FUJIFILM Corporation
Most cited
By later US patents
- Instrument and method for non-invasive in vivo testing for body fluid constituents1,346US 4,875,486 AAdvanced Techtronics, Inc. · 1989
- Device construction and method facilitating magnetic resonance imaging of foreign objects in a body594US 4,989,608 A1991
- Tracking system to monitor the position and orientation of a device using multiplexed magnetic resonance detection462US 5,318,025 AGeneral Electric Company · 1994
- ECG amplifier and cardiac pacemaker for use during magnetic resonance imaging439US 5,217,010 AThe Johns Hopkins University · 1993
- Assessing the condition of a joint and assessing cartilage loss420US 7,184,814 B2The Board of Trustees of the Leland Stanford Junior University · 2007