US Patent Issued to Kunming University of Science and Technology on March 25 for "Graded oxygen regulating, explosion preventing and recycling system and method for liquid nitrogen wash tail gas" (Chinese Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,129, issued on March 25, was assigned to Kunming University of Science and Technology (Kunming, China).

"Graded oxygen regulating, explosion preventing and recycling system and method for liquid nitrogen wash tail gas" was invented by Qiulin Zhang (Kunming, China), Ping Ning (Kunming, China), Lianyun Gao (Kunming, China), Jianjun Chen (Kunming, China) and Tianrun Shao (Kunming, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a graded oxygen regulating, explosion preventing and recycling system and method for liquid nitrogen wash tail gas, and relates to the technical field of environmental protection and energy ...