Optics: measuring and testing – By shade or color
Reexamination Certificate
2005-05-10
2005-05-10
Evans, F. L. (Department: 2877)
Optics: measuring and testing
By shade or color
C356S244000
Reexamination Certificate
active
06891617
ABSTRACT:
An apparatus, and method of use thereof, for multiangular visual evaluations of color properties of paint color samples which contain metallic flakes, comprising a cylindrical or semi-cylindrical shaped body capable of securing a color sample panel upon the central axis, wherein the circumference of the body has a partially glossy or mirrored reflective surface, and also has one or more marks indicating specific aspecular viewing angles relative to the plane of a color sample panel, thus allowing for improved correlation between visual and instrumental color evaluations of coated surfaces which contain metallic flakes.
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International Search Report (PCT/US 03/29408) Dated Apr. 2, 2004.
Benjamin Steven C.
E.I. du Pont de Nemours and Company
Evans F. L.
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