ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,471, issued on March 3, was assigned to MITSUBISHI GAS CHEMICAL COMPANY INC. (Chiyoda-ku, Japan).

"Isobutyrate ester compound having carbonate group at alpha-position, and fragrance composition" was invented by Atsushi Okamoto (Niigata, Japan), Kyoko Hiraoka (Niigata, Japan), Wataru Hamajima (Niigata, Japan) and Umi Yokobori (Niigata, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fragrance composition containing a compound represented by Formula (1) as an active ingredient: where in Formula (1), R1 represents a linear, branched, or cyclic alkyl group having from 1 to 4 carbon(s); and R2 represents a linear, branched, or cyclic alkyl group h...