ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,447, issued on June 23, was assigned to FUJIFILM Corp. (Tokyo).

"Method of producing carbonyl compound and flow type reaction system of producing carbonyl compound" was invented by Ryo Nishio (Kanagawa, Japan) and Kenji Wada (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "There are provided a method of producing a carbonyl compound by a flow type reaction, including introducing a triphosgene solution into a flow channel (I), bringing the triphosgene solution into contact with a solid catalyst immobilized in at least a part of the flow channel (I) to generate a phosgene solution while the triphosgene solution is flowing through the fl...