US Patent Issued to NIPPON SHOKUBAI on Aug. 11 for "Particulate water-absorbing agent and method for producing the same" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,702,967, issued on Aug. 11, was assigned to NIPPON SHOKUBAI Co. LTD. (Osaka, Japan).

"Particulate water-absorbing agent and method for producing the same" was invented by Satoshi Matsumoto (Himeji, Japan), Kanako Tsuru (Himeji, Japan), Taishi Kobayashi (Himeji, Japan), Daisuke Takagi (Himeji, Japan) and Kazushi Torii (Himeji, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "[Problem] In an embodiment involving addition of a chelating agent in an upstream process of the process for production, such as the polymerization step, the residual ratio of the chelating agent in the final product, a particulate water-absorbing agent, is improved.[Solution] A ...