US Patent 7169299 Fractionating apparatus for liquid chromatography

Patent 7169299 was granted and assigned to Shimadzu Corp. on January, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Shimadzu Corp.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7169299

Date of Patent

January 30, 2007

Patent Application Number

10881099

Date Filed

June 29, 2004

Patent Primary Examiner

‌

Ernest G. Therkorn

Patent abstract

A distal end portion of a probe has a multi-pipe structure, in which an effluent solution from a high speed liquid chromatography passes through an innermost flow passage, a matrix solution through an outer flow passage, and the air through an outermost flow passage. A distal end of the outermost pipe extends 1.2 mm longer than the distal end of the inner duplex tube to form a liquid reservoir. When dropping a liquid droplet from the distal end of the probe, the air is blown out to expel the liquid gathered in the liquid reservoir to be dropped.