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:
Jul. 28, 2009
Filed:
Oct. 24, 2006
Applicant:
Yosuke Iwata, Kyoto, JP;
Inventor:
Yosuke Iwata, Kyoto, JP;
Assignee:
Shimadzu Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 15/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is directed to reduce the dead volume in a flow path with trap functions. A flow path switching valveis provided, which includes a rotor, i.e., rotor, and a housing tophaving four ports-connected to external flow paths, wherein two ports used for a mobile phase for analyzing are an inlet portand an outlet port, and the other two ports used for a mobile phase for condensing are an inlet portand an outlet port. In the rotor, two circular arc-shaped rotor trenchesfor communicating two ports are formed at positions corresponding to the ports-. The rotor trenchis filled with an adsorbent.