Electrospraying apparatus and method for coating particles
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United States of America Patent
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Oct 9, 2007
Grant Date -
Sep 16, 2004
app pub date -
Mar 25, 2004
filing date -
Jun 12, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
An electrospraying apparatus and/or method is used to coat particles. For example, a flow including at least one liquid suspension may be provided through at least one opening at a spray dispenser end. The flow includes at least particles and a coating material. A spray of microdroplets suspending at least the particles is established forward of the spray dispenser end by creating a nonuniform electrical field between the spray dispenser end and an electrode electrically isolated therefrom. The particles are coated with at least a portion of the coating material as the microdroplet evaporates. For example, the suspension may include biological material particles.
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