Liquid chromatograph

Details Liquid chromatograph Liquid chromatograph

2007-05-08

2007-05-08

Therkorn, Ernst G. (Department: 1723)

Liquid purification or separation

With means to add treating material

Chromatography

C210S656000, C422S070000

Reexamination Certificate

active

11088930

ABSTRACT:
A two-dimensional liquid chromatograph includes a first-dimension separation channel for guiding a sample injected from a sample injection part to a first-dimension analysis column using a first-dimension analysis mobile phase for separation; two trap columns; an analysis channel for guiding components retained in the trap columns to a second-dimension analysis column using a second-dimension analysis mobile phase for analysis; and a channel switching mechanism. The switching mechanism connects the first-dimension separation channel to one of the trap columns and connecting the analysis channel to the other of the trap columns, and also switches connections between the trap columns and the channels.

REFERENCES:
patent: 4597943 (1986-07-01), Sugiyama et al.
patent: 6802967 (2004-10-01), Masuda et al.
patent: 6942793 (2005-09-01), Ito et al.
patent: 6955760 (2005-10-01), Iwata
patent: 2003/0168392 (2003-09-01), Masuda et al.
patent: 2004/0124128 (2004-07-01), Iwata
patent: 2004/0173509 (2004-09-01), Ito et al.
patent: 2006/0219638 (2006-10-01), Watanabe et al.
patent: 2007/0023639 (2007-02-01), Yamashita et al.
patent: 2003-254955 (2003-09-01), None
Machine Language Translation of Japan Patent No. 2003-254955.

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