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:
Jan. 03, 2023
Filed:
Feb. 21, 2018
Applicant:
Shimadzu Corporation, Kyoto, JP;
Inventor:
Takanari Hattori, Kyoto, JP;
Assignee:
SHIMADZU CORPORATION, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 15/16 (2006.01); B01D 15/40 (2006.01); G01N 30/32 (2006.01); G01N 30/34 (2006.01); G01N 30/86 (2006.01); H04Q 9/02 (2006.01);
U.S. Cl.
CPC ...
B01D 15/163 (2013.01); B01D 15/40 (2013.01); G01N 30/32 (2013.01); G01N 30/34 (2013.01); G01N 30/8658 (2013.01); G01N 2030/324 (2013.01); G01N 2030/326 (2013.01); G01N 2030/347 (2013.01); H04Q 9/02 (2013.01);
Abstract
When a liquid in the column is replaced by carbon dioxide in a supercritical state in the chromatograph, an operation of a first pump is controlled by a flow rate control unit, and the carbon dioxide in the supercritical state is supplied at a constant pressure. Moreover, when a flow rate of the carbon dioxide in the supercritical state reaches a predetermined flow rate thereafter, the flow rate control unit controls an operation of the first pump so that the carbon dioxide in the supercritical state is supplied at a constant flow rate.