ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,478, issued on Oct. 21, was assigned to SMART MATERIALS Ltd. (St. Paul's Bay, Malta).
"Method for the synthesis of an auxetic polyurethane foam with a defined cell structure and auxetic polyurethane foam obtainable by the method" was invented by Keith Mario Azzopardi (Swieqi, Malta), Matthew Anthony Xuereb (Birkirkara, Malta) and Ruben Gatt (Rabat, Malta).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for the synthesis of an auxetic polyurethane foam with a defined cell structure and an auxetic polyurethane foam substrate obtainable by a method according to the invention. The method includes mixing a polyol reagent and a foaming reagent, for...