US Patent Issued to Borealis on Jan. 27 for "Stiff blown film" (Austrian, Finnish Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,553, issued on Jan. 27, was assigned to Borealis AG (Vienna).

"Stiff blown film" was invented by Jingbo Wang (Linz, Austria), Markus Gahleitner (Linz, Austria), Klaus Bernreitner (Linz, Austria), Pauli Leskinen (Porvoo, Finland) and Matthias Hoff (Linz, Austria).

According to the abstract* released by the U.S. Patent & Trademark Office: "Blown films, especially monolayer blown films, of high stiffness, the blown films comprising at least 95.0 wt % of a specific propylene-1-butene random copolymer."

The patent was filed on March 17, 2021, under Application No. 17/797,183.

*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/...