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:
Jun. 29, 2021
Filed:
Jul. 06, 2016
Shimadzu Corporation, Kyoto, JP;
Tomoyuki Yamazaki, Kyoto, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
A preparative liquid chromatograph that separates components in a sample in a separating column and captures a plurality of target components in an eluate from the separating column in individual trap columns, includes: a column switching means configured to switch passages to cause the eluate having been eluted from the separating column and passed through a detector to selectively flow into one of the trap columns, a passage switching means disposed in a passage between the detector and the column switching means and configured to switch between a first state in which the eluate flows to the column switching means and a second state in which the eluate is discharged without flowing to the column switching means. For the switching among the trap columns, the passage switching means and the column switching means are controlled to set the passage switching means in the second state (step S) before performing the switching operation of the column switching means (step S). This prevents entry of a target component into a wrong trap column during the switching among the trap columns.