ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,438, issued on June 17, was assigned to Milliken & Co. (Spartanburg, S.C.).

"Insulating double-knit fabric" was invented by William Michael Rose (East Hampstead, N.H.), Gary S. Smith (Lee, N.H.), Marina Kozera (Portland, Ore.), William Patz (Belmont, N.C.) and Gadalia Vainer (Melrose, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An insulating, double-knit fabric containing a first knit layer and a second knit layer coupled with the first knit layer through a plurality of first direction spaced apart rows in a first direction and a plurality of second direction spaced apart rows in a second direction which is perpendicular to the first direct...