Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Reexamination Certificate
2005-08-09
2005-08-09
Patidar, Jay (Department: 2862)
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
C324S204000, C324S071400, C324S226000, C422S068100, C436S526000
Reexamination Certificate
active
06927570
ABSTRACT:
An apparatus is provided for quantitatively measuring samples whose amount or other characteristic quality is to be determined. The samples are arranged in a predefined pattern and are excited in a magnetic field. The magnetizations of the magnetic particles are thereby caused to oscillate at the excitation frequency in the manner of a dipole to create their own fields. These fields are inductively coupled to at least one substantially flat sensor such as sensing coils fabricated in a gradiometer configuration.
REFERENCES:
patent: 4875357 (1989-10-01), Giallorenzi
patent: 5512822 (1996-04-01), Masuda
patent: 6051970 (2000-04-01), Hutchings
patent: 6552530 (2003-04-01), Vaiser et al.
Black Randall Christopher
Diederichs Jost Hermann
Jensen Kurt Gordon
Simmonds Michael Bancroft
Patidar Jay
Quantum Design, Inc.
Wieczorek, Esq. Mark D.
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