Appeal No. 96-1726
Application 08/146,498
lightweight material, such as linen, cotton, or synthetic fabric,
and a flexible sheet (inner layer) 20 of lightweight, moisture-
proof, electrically conductive material underlying the major part
of the upper portion of the front panel 15.
Considering now the teaching of three layer surgical
gowns in the Holt and Schwarze patents, we find that, while
they each rely upon three layers to form the gown, a combination
and association of different layers in each patent forms the
resulting three layer surgical gowns. More specifically, the
surgical gown of Holt (Figure 4) includes an intermediate barrier
layer (polypropylene) 22 with an outer layer of fluid absorbent
nonwoven material 20 and an inner fluid absorbent nonwoven
material layer 24 to absorb surgeon perspiration. As to the
surgical gown of Schwarze (Figure 2), it includes an inner
(intermediate) layer 24 formed of polyester/cotton blend, either
woven or knit, which has been treated with an effective amount of
bacteriostatic silyl quaternary amine ammonium compound, with the
intermediate layer 24 being surrounded by two outer (inner and
outer) layers 22 of untreated (no antimicrobial material), thin,
tightly woven, fine denier, breathable polyester fabric providing
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Last modified: November 3, 2007