ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,561, issued on Sept. 30, was assigned to Dow Silicones Corp. (Midland, Mich.).

"Silicone-polyether copolymer, sealants comprising same, and related methods" was invented by Martin Grasmann (Midland, Mich.), Bizhong Zhu (Midland, Mich.) and Brian Harkness (Midland, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composition comprises at least one silicone-polyether copolymer having the average formula Xg[ZjYo]c, where each X is an independently selected silicone moiety having a particular structure, each Y is an independently selected polyether moiety, each Z is an independently selected organosilicon moiety, subscript c is from 1 to 150, sub...