Liquid purification or separation – Processes – Chromatography
Reexamination Certificate
2006-05-30
2006-05-30
Therkorn, Ernest G. (Department: 1723)
Liquid purification or separation
Processes
Chromatography
C210S198200
Reexamination Certificate
active
07052611
ABSTRACT:
A solid phase extraction (SPE) device having a reservoir with an opening; a well comprising an internally tapered wall, the well having a wider interior diameter at an end closest to the opening than at an exit spout; a first filter within the well; a bed of sorbent particles within the well below the first filter; and a second filter having a diameter smaller than the first filter within the well below the bed of sorbent particles and above the exit spout is provided. A method of performing SPE using the device is also provided.
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Belanger Jonathan
Bouvier Edouard S. P.
Fisk Raymond P.
Gilar Martin
Iraneta Pamela Carmen
Janiuk Anthony J.
Therkorn Ernest G.
Waters Investments Limited
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