US Patent Issued to W.R. Grace & Co.-Conn. on Feb. 17 for "Propylene-ethylene copolymer compositions suitable for hot fill packaging of foodstuffs" (Maryland Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,884, issued on Feb. 17, was assigned to W.R. Grace & Co.-Conn. (Columbia, Md.).

"Propylene-ethylene copolymer compositions suitable for hot fill packaging of foodstuffs" was invented by Matthew Fedec (Columbia, Md.), Jan Van Egmond (Columbia, Md.), Manu Rego (Columbia, Md.), John Kaarto (Columbia, Md.) and Li-Min Tau (Columbia, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A propylene-ethylene copolymer includes propylene as a primary monomer, an ethylene content (ET) of 3.0% to 5% by weight, a melt flow rate of from 20 to 45 g/10 min, a xylene soluble fraction (XS) of from 2.0% to 7.0% by weight, and an XS/ET ratio of less than or equal to 1.5...