US Patent Issued to China University of Mining and Technology on June 10 for "Mobile liquid nitrogen fire extinguishing system and method for utility tunnel" (Chinese Inventors)

ALEXANDRIA, Va., June 18 -- United States Patent no. 12,324,939, issued on June 10, was assigned to China University of Mining and Technology (Jiangsu, China).

"Mobile liquid nitrogen fire extinguishing system and method for utility tunnel" was invented by Guowei Zhang (Jiangsu, China), Dong Guo (Jiangsu, China), Huaxiang Li (Jiangsu, China), Yinan Sun (Jiangsu, China), Zheng Li (Jiangsu, China), Zhiwei Zhang (Jiangsu, China), Su Yan (Jiangsu, China) and Junbin Huang (Jiangsu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mobile liquid nitrogen fire extinguishing system for a utility tunnel is provided, including a liquid nitrogen production assembly, a fire extinguishing assembly, a monitoring devi...