US 12,065,584 B2
Electrically conductive, transparent, translucent, and/or reflective materials
Karl F. Humiston, New York, NY (US); and Kristoffer K. Stokes, Lunenburg, MA (US)
Filed by CELGARD, LLC, Charlotte, NC (US)
Filed on Mar. 2, 2021, as Appl. No. 17/189,584.
Application 17/189,584 is a division of application No. 16/031,003, filed on Jul. 10, 2018, granted, now 10,934,440.
Application 16/031,003 is a division of application No. 14/687,131, filed on Apr. 15, 2015, granted, now 10,030,157, issued on Jul. 24, 2018.
Claims priority of provisional application 61/979,564, filed on Apr. 15, 2014.
Prior Publication US 2021/0253878 A1, Aug. 19, 2021
Int. Cl. C09D 5/24 (2006.01); C23C 14/20 (2006.01)
CPC C09D 5/24 (2013.01) [C23C 14/20 (2013.01); C08J 2323/06 (2013.01); C08J 2323/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A transparent or translucent membrane comprising: a microporous polymeric matrix having multiple layers with a structure of polypropylene (PP)/polyethylene(PE)/polypropylene(PP) and an interconnected pore structure and an index of refraction; and
a filler material fills the pore structure of the polymeric matrix, the filler material having an index of refraction substantially matching the index of refraction of the polymeric matrix, wherein substantially matching means the filler material has an index of refraction that is +/−0.1 relative to the index of refraction of the polymeric matrix, and
wherein the filler material is a solid.