Magnetoresistive sensing device, system and method for...

Details Magnetoresistive sensing device, system and method for... Magnetoresistive sensing device, system and method for...

2006-09-12

2006-09-12

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Fluid material examination

C324S228000, C324S244000

Reexamination Certificate

active

07106051

ABSTRACT:
The present invention relates to a magnetoresistive sensing device, a system and a method for determining a density of magnetic particles in a fluid. The magnetoresistive sensing device has a substrate (1) with a layer structure (2) for supporting a fluid (3). The layer structure has a first surface area (4) in a first level and a second surface area (5) in another second level and a magnetoresistive element (6) for detecting the magnetic field of at least one magnetic particle (7) in the fluid, the magnetoresistive element being positioned near a transition (8) between the first and second surface area and facing at least one of the surface areas. A corresponding system and method is described as well.

REFERENCES:
patent: 5981297 (1999-11-01), Baselt
patent: 2004/0115786 (2004-06-01), Laing

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