ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,693, issued on April 14, was assigned to NIPPON SHOKUBAI Co. LTD. (Osaka, Japan).
"Method for producing compound" was invented by Hayato Kimura (Himeji, Japan), Masashi Mukae (Himeji, Japan) and Takayuki Matsuda (Himeji, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method for obtaining high-quality products safely and stably. The present invention relates to a method for producing a compound, the method including feeding a slurry containing crystals of the compound to a hydraulic wash column; melting crystals in a crystal-containing circulation slurry discharged from the hydraulic wash column; discharging a mother liquor using...