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:
May. 06, 2025
Filed:
Sep. 12, 2022
Shimadzu Corporation, Kyoto, JP;
Yuka Fujito, Kyoto, JP;
Logan Miller, Columbia, MD (US);
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
A liquid chromatograph includes at least one mobile phase supply flow path (), at least one cleaning solution supply flow path () joining the mobile phase supply flow path (), an analysis flow path () provided with a separation column (), a sampling flow path () provided, at a tip end thereof, with a sampling needle (), a switcher () including a high-pressure valve () having an injection port () and configured to switch a flow path configuration of the liquid chromatograph between a loading state in which the analysis mobile phase supply flow path () and the analysis flow path () are connected in a fluid manner without the sampling flow path () and an injecting state in which the sampling flow path () is interposed between the analysis mobile phase supply flow path () and the analysis flow path () when a tip end of the needle () is inserted into the injection port (), and a controller () configured to execute, when a predetermined condition is satisfied, the cleaning operation of supplying the mobile phase and the cleaning solution to the analysis flow path () and/or the sampling flow path () to temporally change the composition of liquid flowing in the analysis flow path () and/or the sampling flow path ().