US Patent Issued to SONGWON INDUSTRIAL on Dec. 2 for "O-alkylated sterically hindered antioxidants" (South Korean, American, Swiss Inventors)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,467, issued on Dec. 2, was assigned to SONGWON INDUSTRIAL Co. LTD. (Ulsan, South Korea).

"O-alkylated sterically hindered antioxidants" was invented by Jun Dong (Friendswood, Texas), Jeonkyu Lee (Ulsan, South Korea), Gerard Mulqueen (Frauenfeld, Switzerland) and Shinhyun Kim (Ulsan, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a composition a composition comprising compound of the general formula (I) in which R1 a straight or branched C1-C24 alkyl group; R2 is a C1-C8 alkyl group; R3 is a C1-C8 alkyl group. The invention also relates to industrial products such as additive blends, engine oils and polymer...