Appeal No. 2000-1435 2
Application No. 08/601,785
expanding said unfoamed polymeric material in only said
thickness dimension to form said foamed polymeric material with
interplanar gas-filled cells in said material having a dimension
in a direction parallel to said opposed surfaces greater than a
dimension in a direction parallel to said thickness dimension.
9. A method for forming a foamed polymeric object,
comprising preforming the object from an unfoamed polymeric
material having a planar crystalline structure;
saturating the preformed object with a fluid in an
atmosphere at a predetermined ambient pressure; and
reducing the ambient pressure to a pressure at which the
preformed object is supersaturated with the fluid.
15. A foamed polymeric material, having a thickness
dimension transverse to opposed surfaces comprising gas-filled
cells each having one dimension in a direction that is parallel
to said opposed surfaces that is larger than a second dimension
in a direction parallel to said thickness dimension.
21. A foamed polymeric object, formed by:
shaping the object from an unfoamed polymeric material having a
planar crystalline structure;
saturating the shaped object with a fluid in an atmosphere
having an ambient pressure; and
reducing the ambient pressure to a pressure at which the
shaped object is supersaturated with the fluid.
The references relied upon by the examiner as evidence of
unpatentability are:
Martini-Vvedensky et al. 4,473,665 Sep. 25, 1984
(Martini-Vvedensky)
Cha et al. (Cha) 5,158,986 Oct. 27, 1992
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