ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,458,571, issued on Nov. 4, was assigned to DAICEL Corp. (Osaka, Japan).
"1,3-butylene glycol product" was invented by Yasuteru Kajikawa (Tokyo), Tetsuro Nakanishi (Tokyo), Yuki Teshima (Tokyo), Yuuichirou Hirai (Tokyo), Keisuke Ono (Tokyo) and Midori Umehara (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 colorless and odorless, unlikely to be colored over time, and furthermore, 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 ...