ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,796, issued on Dec. 23, was assigned to KANEKA Corp. (Osaka, Japan).
"Flame-retardant fabric and work clothing" was invented by Keita Uchibori (Hyogo, Japan) and Wataru Mio (Hyogo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "One or more embodiments of the present invention relate to a flame-retardant fabric containing a modacrylic fiber in an amount of 30 to 60 mass %, a cellulose fiber in an amount of 20 to 50 mass %, and an aramid fiber in an amount of 10 to 20 mass %. The flame-retardant fabric includes a compound containing stannate and zinc in an amount of 1.4 to 5.0 mass % with respect to a total mass of the flame-retardant fabric. Th...