ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,076, issued on April 15, was assigned to Shandong University (Jinan, China).

"Green sealing material for karst flowing water, and preparation method and use thereof" was invented by Liping Li (Jinan, China), Jing Wang (Jinan, China), Yijie Zhang (Jinan, China), Shikui Jia (Handan, China), Xingzhi Ba (Jinan, China), Shuailong Jia (Handan, China), Diyang Chen (Jinan, China), Hao Jiang (Jinan, China), Ruizhi Jia (Jinan, China), Xiaobo Zhang (Jinan, China) and Xincan Lu (Jinan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a green sealing material for karst flowing water, and a preparation method and use thereof. The green sealing mat...