Battery separator
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United States of America Patent
Stats
-
Nov 8, 1994
Grant Date -
N/A
app pub date -
Apr 1, 1993
filing date -
Apr 1, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A battery separator composed of a microporous sheet product having first and second major surfaces and a thickness of less than about 50 mils, formed from a uniform mixture of a polymer and a filler or a polymer and a structure enhancing agent and having a porous sheet embedded between the first and second major surface. The porosity of the sheet product is at least about 50 volume percent having a pore distribution such that the nominal pore diameter increases from each major surface towards the interior central portion of the sheet product's thickness.
First Claim
Family
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Cited Art Landscape
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