Chemistry: analytical and immunological testing – Carbon containing – In an aqueous solution
Reexamination Certificate
2002-12-02
2010-02-16
Beisner, William H (Department: 1797)
Chemistry: analytical and immunological testing
Carbon containing
In an aqueous solution
C435S012000, C435S287100, C435S287500, C435S288300, C435S288600, C436S108000, C436S052000, C436S145000, C436S147000
Reexamination Certificate
active
07662637
ABSTRACT:
Methods and apparatus (FIG.4a) are disclosed for selective and very sensitive detection of certain hydrolyzable compounds, especially urea, in water by hydrolyzing said hydrolyzable compounds in a sample of the water to one or more carbon dioxide group compounds and determining the difference in the carbon dioxide content of the water and the hydrolyzed sample using conductivity measurements or other carbon dioxide detector outputs.
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Botre et al, “Carbonic anhydrase and urease: an investigation in vitro on the possibility of a synergic action,” Biochimica et biophysica acta, 997, 111-114, 1989.
Andover-IP-Law
Beisner William H
Bowers Nathan A
GE Analytical Instruments
Silverstein David
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