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:
Sep. 17, 2019
Filed:
Jan. 06, 2016
Applicant:
Shimadzu Corporation, Kyoto, JP;
Inventor:
Michiaki Owa, Kyoto, JP;
Assignee:
SHIMADZU CORPORATION, Kyoto-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 30/34 (2006.01); G01N 30/16 (2006.01); G01N 30/74 (2006.01); B01D 15/40 (2006.01); C07K 1/16 (2006.01);
U.S. Cl.
CPC ...
G01N 30/34 (2013.01); B01D 15/40 (2013.01); C07K 1/16 (2013.01); G01N 30/16 (2013.01); G01N 30/74 (2013.01); Y02P 20/544 (2015.11);
Abstract
A back pressure valve configured to switch between a pressurized state and a released state open to an atmosphere is used as a back pressure valve in a supercritical fluid chromatograph. Switching from a state of supercritical fluid chromatography analysis to liquid chromatography is performed by stopping a pump that supplies a supercritical fluid, continuously operating a pump that supplies a solvent used as a modifier, and bringing the back pressure valve into the released state.