Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Reexamination Certificate
2005-04-19
2005-04-19
Alexander, Lyle A. (Department: 1743)
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
C422S082050, C250S343000, C250S339090, C250S339110, C250S339120, C073S061430, C073S061440, C436S056000, C436S060000
Reexamination Certificate
active
06881381
ABSTRACT:
A liquid can be marked for identification purposes with at least first and second miscible markers. The markers are mixed in the liquid so that the ratio of the concentration of the first marker to the concentration of the second marker is substantially equal to a predetermined value. Thus, by comparing the ratio of the measured concentration of the first marker to the measured concentration of the second marker with predetermined values the liquid can be uniquely identified. The detectors can be connected to a processor and control unit (22) for initiation of testing, for processing of detection signal from the detectors, and for display of readout information. Processor and control unit (22) can include a look up table (23) for storing information about marking patterns, a comparison element (35) for comparing measured values with values supplied by look up table (23), and a display (30).
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Coulombe, “Chemical Markers in Weathered Gasolines,” J.of Forensic Sciences, vol. 40, No. 5, Sep. 1995, pp. 867-873.*
Coulombe, R., “Chemical Markers in Weathered Gasoline”,Journal of Forensic Sciences, JFSCA, vol. 40, No. 5, (Sep. 1995) pp. 867-872.
Asher William E.
Clarke Richard H.
Farahat Mohammad S.
Alexander Lyle A.
Cronin Kevin M.
Engellenner Thomas J.
Nutter & McClennen & Fish LLP
On-Site Analysis, Inc.
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