Liquid purification or separation – Filter – Material
Reexamination Certificate
2005-08-02
2008-10-28
Menon, Krishnan S (Department: 1797)
Liquid purification or separation
Filter
Material
C210S500220, C210S500360, C096S008000, C096S012000, C055S522000, C055S529000, C055SDIG007, C264S042000, C264S299000, C264S400000, C264S494000, C264S225000, C264S219000, C216S002000, C216S041000, C216S056000
Reexamination Certificate
active
07442303
ABSTRACT:
A filter membrane, methods of making such filter membrane and apparatus employing such filter membrane are disclosed, in which the filter membrane is a monolithic polymeric membrane that includes a polymeric filter layer including a micron-scale precision-shaped pores and a polymeric support layer that has a precision-shaped porous support structure for the filter layer. Several methods are disclosed for making such a membrane using micromachining techniques, including lithographic, laser ablation and x-ray treatment techniques. Several filter apparatus employing such a membrane are also disclosed.
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Baxter International Inc.
Bradford R. L. Price
Heller Stephen B.
Menon Krishnan S
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