ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,856, issued on July 14, was assigned to SOULBRAIN Co. LTD. (Gyeonggi-do, South Korea).

"Method of preparing asymmetric phosphate-based compound" was invented by Weon Ju Yu (Gyeonggi-do, South Korea), Jae Yeol Ma (Gyeonggi-do, South Korea), Kwang Ju Jung (Gyeonggi-do, South Korea) and Dae Hwan Yoo (Gyeonggi-do, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method of preparing an asymmetric phosphate-based compound. According to the method of the present invention, since a thiolane-based cyclic compound is used alone in a hydrophobic solvent under a base-free condition, the yield of a desired compound ma...