Appeal No. 1997-1525
Application No. 08/151,352
The subject matter on appeal relates to a unitary, single
sheet sound insulating membrane comprising a backing layer and
a nonfoam, polymeric layer having an elongation factor of from
about 500% to about 900% and a Shore A hardness of from about
65 to about 80 points, 5 seconds, wherein the membrane has a
thickness of less than about 0.150 inches. This appealed
subject matter is adequately illustrated by independent claim
1 which reads as follows:
1. A unitary, single sheet sound insulating membrane
comprising:
at least one backing layer; and
a nonfoam, polymeric layer contacting and affixed to said
one backing layer, said polymeric layer formed from at least
one polymeric material, said polymeric layer having an
elongation factor of from about 500% to about 900% and a Shore
A hardness of from about 65 to about 80 points, 5 seconds,
wherein said membrane has a thickness of less than about 0.150
inches.
The references relied upon by the examiner as evidence of
obviousness are:
Bernett et al. (Bernett) 4,567,704 Feb.
4, 1986
Brown 4,681,786 Jul. 21,
1987
Puydak et al. (Puydak) 5,403,892 Apr. 4,
1995
2
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