ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,022, issued on May 20, was assigned to Evonik Operations GmbH (Essen, Germany).
"Polyamide composition" was invented by Kathrin Salwiczek (Recklinghausen, Germany), Chenyu Ye (Shanghai), Urs Welz-Biermann (Lafayette, Ind.), Klaus Hulsmann (Haltern am See, Germany), Fei Teng (Shanghai), Zhisheng Wang (Shanghai) and Juan Guo (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A polyamide composition contains a) 88.5-98 wt. % of at least one aliphatic polyamide, wherein at least one monomer unit has 10 to 14 carbon atoms, and wherein the aliphatic polyamide is semi-crystalline; and b) 2-11.5 wt. % of an S glass fiber. The weight percentages of a) ...