Optics: measuring and testing – By shade or color – With sequential comparison of sample and standard
Reexamination Certificate
2006-10-03
2006-10-03
Lauchman, Layla G. (Department: 2877)
Optics: measuring and testing
By shade or color
With sequential comparison of sample and standard
C356S319000, C427S008000, C427S010000, C427S258000
Reexamination Certificate
active
07116420
ABSTRACT:
A method of producing a finish for a selected wood substrate, wherein the finish provides the selected wood substrate with a color that matches the color of a target object. In accordance with the method, calculations are performed to determine the quantities of at least one group of colorants required to produce a semitransparent wood stain from a vehicle, wherein when the semitransparent wood stain is applied to the selected wood substrate, the selected wood substrate will have a color that matches the target object. The calculations are performed using reflectance measurements of the target object obtained using a spectrophotometer and previously obtained spectral data of the colorants as applied to at least one type of wood. The colorants used to form the semitransparent wood stain do not include a white colorant.
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Aziz Mohammed A.
Cope Thomas L.
Skierski Thomas J.
Katterle Paul R.
Lauchman Layla G.
McDonald Robert E.
The Sherwin-Williams Company
Tsang Vivien Y.
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