ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,693, issued on June 30, was assigned to Borealis AG (Vienna).
"Polypropylene based film" was invented by Jingbo Wang (Linz, Austria), Markus Gahleitner (Linz, Austria), Klaus Bernreitner (Linz, Austria), Pauli Leskinen (Porvoo, Finland), Peter Niedersuess (Linz, Austria) and Stefan Ortner (Linz, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a film, preferably an unoriented film, comprising a polypropylene composition comprising a random copolymer of propylene monomer units and ethylene comonomer units, wherein the random copolymer has a content of ethylene comonomer units of from 0.5 to 4.0 wt %, based on th...