Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Reexamination Certificate
2003-09-24
2009-12-22
Siefke, Sam P (Department: 1797)
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
C422S081000, C422S050000
Reexamination Certificate
active
07635452
ABSTRACT:
A system for measuring diffusion of a compound across a membrane generally comprises a membrane held between a first base having a plurality of outwardly extending hollow projections and a second base fastened to the first base and having a plurality of recessed tapered openings therein adapted to engage the plurality of hollow projections. Methods for measuring membrane diffusion using such systems are included. The system components are also provided in kit form.
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Husberg Michael L.
McIntosh, III Lester H.
Rakow Neal A.
Roscoe Stephen B.
3M Innovative Properties Company
Siefke Sam P
Wright Bradford B.
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