Data processing: measuring – calibrating – or testing – Measurement system – Dimensional determination
Reexamination Certificate
2011-04-12
2011-04-12
Lau, Tung S (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Dimensional determination
Reexamination Certificate
active
07925468
ABSTRACT:
The present invention is directed to an apparatus and a method that characterizes the hiding of coating compositions, such as automotive OEM and refinishes paints. The method is directed to sequentially storing in a computing device hiding data obtained by measuring the color difference (ΔRGB) in reflections of light and dark portions of target areas of a monotonic coating resulting from a coating composition applied over hiding test panel and by measuring coating thicknesses of the monotonic coating that correspond to the target areas, classifying the type of the hiding data, selecting fitting equations applicable to the classified hiding data, fitting the selected equation to match the classified hiding data and locating a hiding thickness on the monotonic coating that corresponds to the threshold value of the color difference at that location to determine the hiding thickness of the coating composition.
Gallagher John Paul
Karmes Roger Albert
Prakash Arun
Rodrigues Allan Blase Joseph
Desbmukh Sudhir G.
E.I. du Pont de Nemours & Company
Lau Tung S
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