Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Chemical analysis
Reexamination Certificate
2005-09-20
2005-09-20
Hoff, Marc S. (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Chemical analysis
C250S339120
Reexamination Certificate
active
06947848
ABSTRACT:
A method of identifying and unknown compound comprises: (a) obtaining an absorption spectrum of the compound; (b) obtaining an absorbance value An(νn) wherein Anis the absorption value at a wavenumber νn; (c) generating an array of values A′n(ν′n) wherein A′n(ν′n)=A′n(ν′n)−A″ where A″ is an absorbance value which is modified from the measured absorbance, such as Aavgwhere Aavgis the average of An(νn); (d) generating an array of values In(νn) by integrating A′n(ν′n) over a region of the spectrum; (e) normalizing the array of values In(νn) with values I′n(ν′n) obtained for a known compound. The system of this invention employs the above-described method in cooperation with a computer capable of receiving the absorption spectrum data and calculating values from the data using algorithms provided to the computer. The method and system of this invention may be used to identify unknown compounds for quality control, process control and other purposes.
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Bove John L.
Walfish Sheldon
Charioui Mohamed
Cooper Union for the Advancement of Science and Art
Goodwin & Procter LLP
Hoff Marc S.
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