US Patent Issued on May 13 for "Battery separator, battery including the separator, and method and system for forming same" (Massachusetts Inventor)

ALEXANDRIA, Va., June 12 -- United States Patent no. 12,300,852, issued on May 13.

"Battery separator, battery including the separator, and method and system for forming same" was invented by William Winchin Yen (Arlington, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Microporous sheet product suitable for use as a battery separator and method of forming the same. According to one embodiment, the method involves forming an extrusion mixture of one or more thermoplastic polymers and a fluid having a high vapor pressure. Next, the mixture is extruded through a die head, cooled and shaped in a first vapor zone under an above-UEL condition to form a solid sheet material. Next, the sheet material is subje...