Appeal 2007-2659
Application 09/940,541
According to Appellants, the invention is directed to a battery with a
container that is covered over the outer peripheral surface with an ion
impermeable and extensible high polymer sheet having a tensile elongation
percentage of 1% or more (Br. 2). Independent claim 1 is illustrative of the
invention and a copy of this claim is reproduced below:
1. A lithium based battery comprising a battery container containing
therein:
a cell structure group formed by stacking unit cells each including a
positive electrode, a negative electrode, and a separator interposed
therebetween, or formed by repeatedly folding or winding an integral body
of said unit cells; and
an electrolyte, which is poured in said battery container after said cell
structure group is contained in said battery container,
wherein said battery is characterized by the presence on the outer
peripheral surface of said battery container of a covering that consists
essentially of an ion impermeable and extensible high polymer sheet having
a tensile elongation percentage of 1 % or more, and
wherein the tensile elongation of the battery container covering is
selected to cause the sheet to provide insulation between the positive and
negative electrodes of the battery when the container is deformed.
The Examiner has relied on the following prior art references as
evidence of obviousness:
Yoshihisa (JP ‘708)(as translated) JP 10-208708 Aug. 7, 1998
Tatsuki (JP ‘564)(as translated) JP 2000-173564 Jun. 23, 2000
ISSUES ON APPEAL
Claims 1-8 stand rejected under 35 U.S.C. § 103(a) as unpatentable
over JP ‘708 in view of JP ‘564 (Answer 3).
2
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