ALEXANDRIA, Va., July 23 -- United States Patent no. 12,364,893, issued on July 22, was assigned to Tyco Fire Products LP (Cranston, R.I.).

"Fire-fighting foam concentrate with silicone surfactant" was invented by Michelle Hu (Oconto, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An aqueous composition, which can be diluted with an aqueous diluent to provide a foam precursor composition, is provided. The foam precursor composition can be aerated to form a firefighting foam. The present aqueous firefighting compositions include a surfactant mixture containing a siloxane-based surfactant together with one or more of a nonionic surfactant, an anionic surfactant, and a zwitterionic surfactant. The aqueous ...