Chromatographic separation device
Patent 4891120 Issued on January 2, 1990. Estimated Expiration Date: 
April 12, 2008. 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.
April 12, 2008. 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 References 3149941 3465884 3503712 3538744 Electrophoretic measurement system including means for determining zone boundries Liquid chromatographic flow cell Blood pressure cuff calibration system Miniature gas chromatograph apparatus Patent #: 4474889 InventorsApplicationNo. 175389 filed on 04/12/1988US Classes:204/600, Electrophoretic or electro-osmotic apparatus73/23.39, Column detail73/61.52, Chromatography210/198.2ChromatographyExaminersPrimary: Niebling, John F.Assistant: Starsiak, John S. Jr. Attorney, Agent or FirmForeign Patent References
International ClassesG01N 027/26G01N 030/02 G01N 030/62 G01N 030/64 Foreign Application Priority Data1986-06-06 GBAbstractA chromatographic separation device comprises a body 2 of a semiconductor material which body has a longitudinal channel 1 formed in a surface thereof, the channel 1 being capable of containing a predetermined volume of a liquid or solid material for a chromatography test or separation procedure, the channel carrying at least one electrode 6 positioned intermediate the channel ends. The semiconductor body may additionally support an electronic or optical sensor 8 arranged in line with said channel 1 to provide an integrated detection system.Other References
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