Appeal No. 2003-0566
Application No. 09/395,072
material to UV radiation for a time sufficient to cure the
acrylate-containing UV curable liquid material to a solid floor
coating having a distinctively different color with respect to
the color of the liquid.
The examiner relies upon the following references as
evidence of obviousness:
Friedlander 4,108,840 Aug. 22, 1978
Field et al. 5,302,627 Apr. 12, 1994
(Field)
Rosenberry et al. 5,719,227 Feb. 17, 1998
(Rosenberry)
Appellants' claimed invention is directed to a method of
forming a solid floor coating from a liquid coating comprising an
acrylate-containing UV curable liquid material. The liquid
material also contains a die or pigment that changes color upon
exposure to UV radiation. Accordingly, the cured acrylate-
containing material has a distinctly different color than the
liquid material before curing. In the words of appellants,
the invention involves the use of dyes or pigments
which impart a strong color to a clear liquid coating
and which color becomes nearly imperceptible at the
best, or visually discernible from the liquid state at
the least, upon polymerization of the coating system by
exposure to suitable radiation, such as ultraviolet
light [page 3 of principal brief, second paragraph].
Appealed claims 21-30 stand rejected under 35 U.S.C. § 103
as being unpatentable over Friedlander in view of Field. All the
appealed claims also stand rejected under § 103 over Rosenberry
in view of Field.
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