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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.:

US 9651526 B1

PDFFull Text
Date of Patent:
May. 16, 2017

Filed:

Mar. 25, 2015

Liquid chromatograph

Applicant:

Shimadzu Corporation, Kyoto-shi, Kyoto, JP;

Inventors:

Kengo Aoki, Kyoto, JP;

Keisuke Ogawa, Kyoto, JP;

Assignee:

SHIMADZU CORPORATION, Kyoto-shi, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Paul West

Int. Cl.
CPC ...
G01N 30/34 (2006.01); B01D 15/16 (2006.01); B01D 15/18 (2006.01); B01D 15/08 (2006.01); G01N 30/20 (2006.01); G01N 30/38 (2006.01); G01N 30/86 (2006.01);
U.S. Cl.
CPC ...
G01N 30/34 (2013.01); B01D 15/08 (2013.01); B01D 15/16 (2013.01); B01D 15/166 (2013.01); B01D 15/18 (2013.01); G01N 30/20 (2013.01); G01N 30/8658 (2013.01); G01N 30/8675 (2013.01); G01N 30/8665 (2013.01); G01N 2030/347 (2013.01); G01N 2030/383 (2013.01); G01N 2030/385 (2013.01);
Abstract

A liquid chromatograph has a mobile phase delivery section including, between mobile phase channels connected respectively to a plurality of mobile phase containers and a delivery pump, channel switching valves for selecting one of the mobile phase channels. This liquid chromatograph whose channel switching valves have a hierarchical structure including at least two stages includes a valve connection state setting section that is configured to set the connection state between the channel switching valves and the connection state between the channel switching valves and the mobile phase channels, and further includes a per channel total delivery amount calculation section that is configured to calculate the total delivery amount of mobile phase per mobile phase channel based on a connection state according to the valve connection state setting section, the delivery amount per unit time by the delivery pump, and the operation time of the delivery pump.

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