Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Reexamination Certificate
2007-06-26
2007-06-26
Lopez, Carlos (Department: 1731)
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
C264S656000, C210S656000
Reexamination Certificate
active
10297992
ABSTRACT:
The invention relates to a process for the production of chromatography columns or capillaries containing sorbents of monolithic mouldings which can remain directly in their gelation mould after production. This is achieved by the process according to the invention, in which the gelation mould is repeatedly filled with the monomer sol.
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Ishizuka et al, Performance of a Monolithic Silica Column in a Capillary under Presure-Driven and Electrodriven Conditions, Analytical Chemistry vol. 72, No. 6 Mar. 15,200,Published on the web Feb. 10, 2000, pp. 1275-1280.
Ishizuka N et al., “Designing monolithic double-pore silica for high-speed liquid chromatography,” Journal of Chromatography, vol. 797, No. 1-2, pp. 133-137, Feb. 1998.
Tang Q et al., “Column technology for capillary electrochromatography,” TRAC, Trends in Analytical Chemistry, vol. 19, No. 11, pp. 648-663, Nov. 2000.
Lubda Dieter
Mueller Egbert
Lopez Carlos
Merck Patent GmbH
Millen White Zelano & Branigan P.C.
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