Liquid purification or separation – Filter – Material
Reexamination Certificate
2011-08-16
2011-08-16
Menon, Krishnan S (Department: 1777)
Liquid purification or separation
Filter
Material
C210S500270, C210S651000, C210S652000, C210S653000, C210S654000
Reexamination Certificate
active
07997426
ABSTRACT:
A multi-layer membrane structure including a crosslinked polymeric membrane, such as a crosslinked polyvinyl sulfate membrane or a crosslinked copolymer polyvinyl sulfate and polyvinyl alcohol membrane, is provided. The membrane structure is suitable for use in an acid environment, and is suitable for recovering acid from a feed mixture comprising acid, hydrocarbons and water.
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Feehley William A.
Mayers Michael
Minhas Bhupender S.
Peiffer Dennis G.
White Lloyd S.
Bordelon Bruce M.
ExxonMobil Research and Engineering Company
Menon Krishnan S
Weisberg David M.
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