ALEXANDRIA, Va., March 3 -- United States Patent no. 12,566,159, issued on March 3, was assigned to Mitsubishi Gas Chemical Co. Inc. (Chiyoda-ku, Japan).
"Method for analyzing pyrroloquinoline quinone" was invented by Nur Syafiqah Mohamad Ishak (Niigata, Japan) and Kazuto Ikemoto (Niigata, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An object is to provide a high performance liquid chromatography method which enables quantitative analysis with the stability of reduced pyrroloquinoline quinone under measurement conditions maintained. The object can be achieved by the following method. A high performance liquid chromatography analysis method, comprising: a sample preparation step of preparing a sample...