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| Number | Title | Issue Date |
| 7399322 | Method of making porous polymeric separator and lithium ion polymer battery The present invention relates to a method of making a polymeric porous separation membrane for a lithium ion polymer battery, the method comprising: providing a porous polyolefin membrane and a polymer solution of the concentration of 1–20 weight % in an organic s... | 07/15/2008 |
