The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1976
Filed:
Dec. 02, 1970
Tatsuro Haruki, Kyoto, JA;
Shimadzu Seisakusho Ltd., Kyoto, JA;
Abstract
A chromatograph provided with a new and improved purge system for the sample introducing chamber, wherein a first carrier fluid supplying conduit is connected to the chamber adjacent to the sample injection port thereof and a second carrier fluid supplying conduit is connected to the fluid path between the column and the connecting point of the first conduit and the chamber. When a sample is injected into the chamber for analysis, the carrier fluid is supplied into the chamber through the first conduit to carry the sample components into the column, and when the analysis has been completed, the carrier fluid is introduced into the fluid path through the second conduit to flow upstream through the chamber, thereby preventing any of the sample components remaining in the chamber from entering the column to cause 'ghost' peaks or baseline fluctuation in the chromatogram.