Liquid purification or separation – With means to add treating material – Chromatography
Reexamination Certificate
2006-12-26
2006-12-26
Therkorn, Ernest G. (Department: 1723)
Liquid purification or separation
With means to add treating material
Chromatography
C210S656000, C073S061520, C422S070000, C422S105000
Reexamination Certificate
active
07153421
ABSTRACT:
A multi-layer microfluidic separation device comprises a polymeric membrane frit that may be securely bonded within the device and minimizes lateral wicking. Stationary phase material having an average particle size is retained by a frit having an average pore size that is smaller than the average particle size. In one embodiment, a secure bond is ensured by treating the polymer to match its surface energy to that of the materials to which it is bound. Treatments include plasma treatment, irradiation and the application of acids.
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Koehler Jeffrey A.
Patel Paren P.
Gustafson Vincent K.
Intellectual Property / Technology Law
Nanostream, Inc.
Therkorn Ernest G.
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