ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,328, issued on Jan. 13, was assigned to DAICEL Corp. (Osaka, Japan).
"1,3-butylene glycol product" was invented by Yasuteru Kajikawa (Tokyo), Yuki Teshima (Tokyo), Yuuichirou Hirai (Tokyo), Keisuke Ono (Tokyo), Midori Umehara (Tokyo) and Tetsuro Nakanishi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a high-purity 1,3-butylene glycol product that is odorless and is unlikely to cause acid concentration increase over time in a state containing water. A 1,3-butylene glycol product, having, according to a gas chromatographic analysis performed under predetermined conditions, a peak area ratio of 100 ppm or lower appearing in a relati...