ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,734,560, issued on Sept. 15, was assigned to Sumitomo Seika Chemicals Co. Ltd. (Harima-cho, Japan).
"Method for manufacturing water absorbent resin" was invented by Nobumasa Shiraishi (Himeji, Japan), Yoichi Murakawa (Himeji, Japan) and Nobuyuki Kanja (Himeji, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a water-absorbent resin includes a cleaning step of cleaning the inside of a heat exchanger that is connected to a vessel holding an aqueous gel-like polymer as a precursor of the water-absorbent resin and is configured to cool a gas containing the polymer generated in the vessel. The heat exchanger, and includes: a p...