ALEXANDRIA, Va., June 5 -- United States Patent no. 12,279,531, issued on April 15, was assigned to Xi'an Jiaotong University (Xi'an, China).

"Alginate hydrogel-based thin-film heat flux sensor for billet crystallizer" was invented by Zhongkai Zhang (Xi'an, China), Jiaming Lei (Xi'an, China), Le Li (Xi'an, China), Shuimin Li (Xi'an, China), Bian Tian (Xi'an, China), Libo Zhao (Xi'an, China) and Zhuangde Jiang (Xi'an, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An alginate hydrogel-based thin-film heat flux sensor for billet crystallizer includes an alginate hydrogel substrate. The alginate hydrogel substrate is configured in a U-shaped planar structure. The U-shaped planar structure includes a first...