Patent ID: 11969929
Assignee: CELGARD, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  H  D  Y | IPC B  D  H

Claim 27:
28. The multilayer microporous membrane of claim 27, wherein:
there is one inner sub-membrane and the inner sub-membrane and the two outermost sub-membranes comprise six micro-layers or nano-layers;
there is one inner sub-membrane and the inner sub-membrane and the two outermost sub-membranes comprise six micro-layers or nano-layers, wherein outermost micro-layers or nano-layers of the outermost sub-membranes comprise, consist of, or consist essentially of polypropylene or a blend of polypropylene and another resin; or
there is one inner sub-membrane and the inner sub-membrane and the two outermost sub-membranes comprise six micro-layers or nano-layers, wherein outermost micro-layers or nano-layers of the outermost sub-membranes comprise, consist of, or consist essentially of polypropylene or a blend of polypropylene and another resin, and wherein middle two micro-layers or nano-layers of the two outermost sub-membranes and the inner sub-membrane comprise, consist of, or consist essentially of polyethylene.