Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Reexamination Certificate
2011-05-03
2011-05-03
Xu, Ling (Department: 1784)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
C428S315500, C428S315700, C428S315900, C428S457000, C428S461000, C428S462000, C427S002310, C427S307000, C427S314000, C427S372200, C427S430100, C427S245000, C427S385500, C204S192100, C623S011110
Reexamination Certificate
active
07935416
ABSTRACT:
Provided are a nanoporous membrane including a support; a first separation layer with a plurality of first nano-sized pores and a first matrix; and a second separation layer having a plurality of second pores respectively corresponding to the plurality of first pores of the first separation layer and a second matrix, and formed on the first separation layer, wherein a density of the plurality of the first pores and the second pores is equal to or greater than 1010/cm2, and a diameter of each of the second pores is less than that of the corresponding first pore, a process of fabricating the same, and a device for a controlled release of biopharmaceuticals including the nanoporous membrane. The device for a controlled release of biopharmaceuticals including the nanoporous membrane can release biopharmaceuticals at a constant rate for a long period of time regardless of the concentration of the biopharmaceuticals including in pharmaceuticals, and high flex and selectivity.
REFERENCES:
patent: 7438193 (2008-10-01), Yang et al.
patent: 2006/0037477 (2006-02-01), Lopez et al.
patent: 20070040668 (2007-04-01), None
Translation of Korean Office Action dated Nov. 20, 2009.
Korean Office Action dated Nov. 20, 2009.
Hahn Sei Kwang
Kim Jin Kon
Yang Jung-A
Yang Seung Yun
Perman & Green LLP
Postech Academy-Industry Foundation
Xu Ling
LandOfFree
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