Liquid purification or separation – Filter – Material
Reexamination Certificate
2008-09-09
2008-09-09
Fortuna, Ana M (Department: 1797)
Liquid purification or separation
Filter
Material
C210S500270, C210S500300, C210S500320, C210S500310, C264S041000
Reexamination Certificate
active
11264928
ABSTRACT:
There is disclosed a process for the production of cellulose hydrate ultrafiltration membranes having improved filtration performance and the ultrafiltration membranes produced by the process.
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Hörl Hans-Heinrich
Nussbaumer Dietmar
Chernoff Vilhauer McClung & Stenzel LLP
Fortuna Ana M
Sartorius Stedim Biotech GmbH
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