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:
Jul. 09, 2002
Filed:
Mar. 27, 2000
Yamazen Corporation, , JP;
Abstract
An injection apparatus of the present invention includes a first switching valve RV which is selectively connected to any of a plurality of injectors at one end sides thereof; a second switching valve RV which is selectively connected to any of the plurality of injectors at the other end sides thereof; a third switching valve RV which is connected to the second switching valve and is selectively connected to any of a plurality of columns at one end sides thereof; and a fourth switching valve RV which is selectively connected to any of the plurality of columns at the other end sides thereof A sequential switching of these four switching valves can permit the sample liquids in the injectors to be delivered in sequence into any selected column and as such can allow the sample liquids packed in the plurality of injectors to be efficiently dispensed or analyzed by a chromatograph.