ALEXANDRIA, Va., July 28 -- United States Patent no. 12,691,431, issued on July 28, was assigned to HAIAN INSTITUTE OF HIGH-TECH RESEARCH, NANJING UNIVERSITY (Haian City, China).

"Reaction kettle and coating preparation method using reaction kettle" was invented by Shaochun Tang (Haian City, China), Hongbin Lu (Haian City, China) and Xiangkang Meng (Haian City, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a reaction kettle and a coating preparation method using the reaction kettle. The reaction kettle includes a kettle body (100), the top of the kettle body (100) is provided with a feed port (110), and the side of the kettle body (100) is provided with a discharge port (120). An upper ...