Liquid purification or separation – Processes – Chromatography
Reexamination Certificate
2006-08-22
2006-08-22
Therkorn, Ernest G. (Department: 1723)
Liquid purification or separation
Processes
Chromatography
C210S198200, C141S012000, C141S080000
Reexamination Certificate
active
07094352
ABSTRACT:
A column comprising a first end (2a) provided with a column packing means and a second end (2b) provided with a fluid collection means for collecting fluid from over some or all of the internal cross-section of the column, wherein said first and second ends (2a, 2b) are held apart by a column wall. The second end (2b) is provided with blocking means (52, 72, 82, 92) movable between a blocking position where said blocking means (52, 72, 82, 92) substantially obstructs the collection of fluid from a predetermined portion (CR, CR1, CR2) of the cross-section of the column and an non-blocking position where it does not substantially obstruct the collection of fluid from the predetermined portion (CR, CR1, CR2) of the cross-section of the column. This allows the resistance to flow through the collection means to be modified to control where the bed media is deposited over the cross-section of the column.
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Bentley Dwayne L.
GE Healthcare Bio-Sciences AB
Ji Yonggang
Therkorn Ernest G.
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