Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Reexamination Certificate
2005-04-12
2005-04-12
Alexander, Lyle A. (Department: 1743)
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
C422S091000, C422S105000, C435S288400, C435S288500, C435S297100, C436S177000, C436S178000, C436S180000
Reexamination Certificate
active
06878344
ABSTRACT:
An apparatus for use in testing a plurality of compositions in parallel. The apparatus includes an upper plate having a plurality of openings extending therethrough to form upper fluid chambers and a lower plate having a plurality of openings extending at least partially therethrough to form cavities. A central plate having a plurality of openings extending therethrough to form central fluid chambers is positioned between the upper and lower plates with the central chambers in alignment with the upper chambers and the cavities. A porous sheet is interposed between the upper and central plates such that an upper surface of the sheet is in contact with fluid within the upper chamber and a lower surface of the sheet is in contact with fluid within the central chamber. The apparatus further includes a flexible membrane positioned between the lower and central plates such that changes in pressure within the cavities or fluid chambers cause deflection of the membrane to force fluid to pass through the porous sheet.
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Havadtoy Steve
Mansky Paul
Tiede Richard
Alexander Lyle A.
Symyx Technologies Inc.
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