Particle manipulation in an ultrasonic field
Patent 5484537 Issued on January 16, 1996. Estimated Expiration Date: 
January 16, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 16, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAcoustic particle separation Single mode levitation and translation Manipulation of particles Manipulating particulate matter Ultrasonic field generating device Manipulating means utilizing ultrasonic wave energy for use with particulate material Patent #: 5006266 InventorAssigneeApplicationNo. 927647 filed on 11/16/1992US Classes:210/748, Utilizing electrical or wave energy (directly applied to liquid or material being treated)210/542MISCELLANEOUSExaminersPrimary: Cintins, IvarsAttorney, Agent or FirmForeign Patent References
International ClassB01D 043/00Foreign Application Priority Data1990-03-14 GBAbstractAn ultrasonic field is used to manipulate biological cells or other particles in fluid suspension. A cavity is bounded by a thin plastics wall and excitation is confined to a single acoustic mode to displace the cells radially. The resulting column of cells can be transported more easily than the radially diffuse bands produced in earlier apparatus.Other References
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