Appeal No. 1997-0569
Application No. 08/150,559
Appellants’ invention relates to a method of preparing
colored roofing granules, a product (i.e., granules) prepared
by that method and a roofing material including granules
prepared by that method on a man-made composition substrate.
Independent claims 1, 7, 13, 19 and 20 are representative of
the subject matter on appeal and a copy of those claims, as
reproduced from the Appendix to appellants’ brief, is attached
to this decision.
The prior art references of record relied upon by the
examiner as evidence of obviousness of the claimed subject
matter are:
Doherty 0,927,644 Jul. 13,
1909
Wright 2,092,567 Sep. 7,
1937
Lewis et al. (Lewis) 3,341,347 Sep. 12,
1967
Additional prior art relied upon by the examiner is
2
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