Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Reexamination Certificate
2006-06-27
2006-06-27
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
C073S061560, C210S198200
Reexamination Certificate
active
07066011
ABSTRACT:
The present invention aims to provide a liquid chromatograph, an analysis system, and a gradient elution method, which are designed to permit a gradient change of eluent with higher precision and also permit a high sensitive detection or analysis. For attaining the object, there are provided: a liquid chromatograph having at least a liquid-feeding means for flowing an eluent E at a predetermined flow rate, a sample-pouring means for pouring a sample Sm into the eluent E, and a separation-column means for separating a solute So contained in the sample Sm into components, comprising an eluent-selecting means for forming branched flow paths having predetermined volumes by dividing a flow path of the eluent E fed from the liquid-feeding means, temporally storing eluents E1, E2, and soon in the branched flow paths, and pouring the sample Sm into the selected eluents E1, E2, and so on, and means for carrying out a gradient elution of a solute So; an analysis system comprising a mass spectrometer connected to the liquid chromatograph, and a gradient-elution method using the liquid chromatograph.
REFERENCES:
patent: 3373872 (1968-03-01), Hrdina
patent: 3536450 (1970-10-01), Dus et al.
patent: 4158630 (1979-06-01), Stearns
patent: 4816226 (1989-03-01), Jordan et al.
patent: 4926702 (1990-05-01), Stephens et al.
patent: 5049509 (1991-09-01), Szakasits et al.
patent: 5071547 (1991-12-01), Cazer et al.
patent: 5108928 (1992-04-01), Menard et al.
patent: 5783450 (1998-07-01), Yoshida et al.
patent: 5952557 (1999-09-01), Ikeda et al.
patent: 6054047 (2000-04-01), Hindsgaul et al.
patent: 6063283 (2000-05-01), Shirota et al.
patent: 6080318 (2000-06-01), Gumm et al.
patent: 6149882 (2000-11-01), Guan et al.
patent: 6196050 (2001-03-01), Ikeda et al.
patent: 6210571 (2001-04-01), Zambias et al.
patent: 6426006 (2002-07-01), Zambias et al.
patent: 6491816 (2002-12-01), Petro
patent: 6581442 (2003-06-01), Murata et al.
patent: 2002/0020670 (2002-02-01), Petro
patent: WO 00/08460 (2000-02-01), None
patent: WO-2000-72001 (2000-11-01), None
patent: WO 02/101381 (2002-12-01), None
International Search Report for Application No. PCT/JP02/03476 dated May 21, 2002.
M.T. Davis et al, “Low Flow High-Performance Liquid Chromatography Solvent Delivery System Designed for Tandem Capillary Liquid Chromatography—Mass Spectrometry,” Journal of the American Society for Mass Spectrometry, vol. 6., No. 7, pp. 572-577, Jul. 1, 1995.
European Search Report for Application No. EP-02-71-4523 dated Jun. 16, 2004.
Yukio Hirata et al., “Single Pump On-Line Mixing System for Capillary Supercritical Fluid Chromatography”,Journal of High Resolution Chromatography, vol. 16, No. 10, pp. 601-604, Oct., 1993.
Isobe Toshiaki
Natsume Tohru
Yamauchi Yoshi
Cole Thomas W.
Fitzgerald John
Nano Solution, Inc.
Nixon & Peabody LLP
Williams Hezron
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