ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,753,159, issued on Oct. 6, was assigned to TORAY INDUSTRIES Inc. (Tokyo).
"3-hydroxyadipic acid 3,6-lactone composition" was invented by Daijiro Tsukamoto (Kamakura, Japan), Kenji Kawamura (Kamakura, Japan) and Katsushige Yamada (Kamakura, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A 3-hydroxyadipic acid-3,6-lactone composition includes 3-hydroxyadipic acid-3,6-lactone, and 3 to 30 parts by weight of Alpha-hydromuconic acid with respect to 100 parts by weight of the 3-hydroxyadipic acid-3,6-lactone; and a method produces a 3-hydroxyadipic acid-3,6-lactone composition, the method including a step of heating 3-hydroxyadipic acid-3,6-lactone to ob...