Quantum Magnetics, Inc.
30Patents
1Active
30Granted
39Portfolio score
Filing activity: Aug 30, 1990 → Jul 24, 2007 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6952163B2 | Combined systems user interface for centralized monitoring of a screening checkpoint for passengers and baggage | Physics | 144 | Expired |
| US5842986A | Ferromagnetic foreign body screening method and apparatus | Human Necessities | 138 | Expired |
| US6208884A | Noninvasive room temperature instrument to measure magnetic susceptibility variations in body tissue | Human Necessities | 130 | Expired |
| US6418335B2 | Ferromagnetic foreign body detection using magnetics | Human Necessities | 126 | Expired |
| US5343147A | Method and apparatus for using stochastic excitation and a superconducting quantum interference device (SAUID) to perform wideband frequency response measurements | Emerging Cross-Sectional Technologies | 105 | Expired |
| US5110034A | Superconducting bonds for thin film devices | Emerging Cross-Sectional Technologies | 101 | Expired |
| US5053834A | High symmetry dc SQUID system | Emerging Cross-Sectional Technologies | 98 | Expired |
| US5139192A | Superconducting bonds for thin film devices | Emerging Cross-Sectional Technologies | 89 | Expired |
| US7317390B2 | Screening checkpoint for passengers and baggage | Physics | 85 | Expired |
| US6922460B2 | Explosives detection system using computed tomography (CT) and quadrupole resonance (QR) sensors | Physics | 76 | Expired |
| US5592083A | System and method for contraband detection using nuclear quadrupole resonance including a sheet coil and RF shielding via waveguide below cutoff | Physics | 69 | Expired |
| US6194898A | System and method for contraband detection using nuclear quadrupole resonance | Physics | 65 | Expired |
| US5986455A | Automatic tuning apparatus and method for substance detection using nuclear quadrupole resonance and nuclear magnetic resonance | Physics | 47 | Expired |
| US6291994A | Active Q-damping sub-system using nuclear quadrupole resonance and nuclear magnetic resonance for improved contraband detection | Physics | 41 | Expired |
| US7047059B2 | Simplified water-bag technique for magnetic susceptibility measurements on the human body and other specimens | Physics | 39 | Expired |
| US5594338A | Automatic tuning apparatus and method for substance detection using nuclear quadrupole resonance and nuclear magnetic resonance | Physics | 34 | Expired |
| US6489767B1 | Apparatus for and method of single-sided magnetic resonance imaging with palm-size probe | Physics | 29 | Expired |
| US6496713B2 | Ferromagnetic foreign body detection with background canceling | Human Necessities | 24 | Expired |
| US6977503B2 | System and method for single-sided magnetic resonance imaging | Physics | 18 | Expired |
| US5319307A | Geometrically and electrically balanaced dc SQUID system having a pair of intersecting slits | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6847208B1 | Tube array coil for quadrupole resonance (QR) scanning | Physics | 16 | Expired |
| US7154266B2 | Screening method and apparatus | Human Necessities | 11 | Expired |
| US6586930B1 | Material thickness measurement using magnetic information | Physics | 11 | Expired |
| US6268724A | Device for selectively detecting metal objects | Physics | 10 | Expired |
| US7633518B2 | Object detection portal with video display overlay | Physics | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.