Appeal No. 1999-1951 3
Application No. 08/797,062
THE CLAIMS
Claims 1 and 40 are illustrative of appellant’s invention and are reproduced
below:
1. A retroreflective article comprising:
a layer of retroreflective elements at least partially embedded in a binder
layer that comprises a polyurethane polymer that is the reaction product of (i) a
polyether polyol having a number average molecular weight of at least 4,000 and
having an end group unsaturation level of no greater than 0.04 milliequivalents
per gram of polyether polyol and (ii) a polyisocyanate.
40. An exposed lens retroreflective article that comprises:
a layer of retroreflective elements partially embedded in a binder layer that
comprises a polyurethane polymer that is the reaction product of (i) a polyether
polyol having a number average molecular weight of at least 2,000 and having an
end group unsaturation level of no greater than 0.04 milliequivalents per gram of
polyether polyol and (ii) a polyisocyanate.
THE REFERENCES OF RECORD
As evidence of obviousness, the examiner relies upon the following references:
Griswold 3,846,378 Nov. 5, 1974
Belisle et al. (Belisle) 4,725,494 Feb. 16, 1988
Li 5,338,595 Aug. 16, 1994
THE REJECTIONS
Claims 1 through 26, 28 through 33, and 36 through 39 stand rejected under
35 U.S.C. § 103(a) as being unpatentable over Belisle in view of Griswold.
Claims 27, 34, 35 and 40 stand rejected under 35 U.S.C. § 103(a) as being
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: November 3, 2007