Appeal No. 2005-1595 3
Application No. 09/870,180
cube corner cavities;
applying a film of reflective material to the recessed faces;
applying to the structured surface a radiation-curable composition suitable for
bonding to
the film of reflective material; and
exposing the composition to radiation sufficient to crosslink the composition after
the
composition has filled the cube corner cavities.
According to pages 23 and 24 of the specification:
“Cube corner cavity” means a cavity bounded at least in part by three faces
arranged as a cube corner element.
“Cube corner element” means a set of three faces that cooperate to
retroreflect light or to otherwise direct light to a desired location.
“Cube corner element” also includes a set of three faces that itself
does not retroreflect light or otherwise direct light to a desired location,
but that if copied (in either a positive or negative sense) in a suitable
substrate forms a set of three faces that does retroreflect light or
otherwise direct light to a desired location.
....
“Retroreflective” means having the characteristic that obliquely incident
incoming light is reflected in a direction antiparallel to the incident
direction, or nearly so, such that an observer at or near the source of
light can detect the reflected light.
PRIOR ART REFERENCE
The prior art references relied upon by the examiner are:
Stamm 3,712,706 Jan. 23, 1973
Rowland 3,810,804 May 14, 1974
Chau et al. (Chau) 5,735,988 Apr. 7, 1998
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