ALEXANDRIA, Va., May 26 -- United States Patent no. 12,637,375, issued on May 26, was assigned to GRAPHEX GROUP Ltd. (Hong Kong).

"Processing method for graphite acid purification wastewater" was invented by Frank Yu (Hong Kong), Liqun Luo (Hong Kong), Bin Qiu (Hong Kong), Ting Jia (Hong Kong) and Xiaoxue Zhang (Hong Kong).

According to the abstract* released by the U.S. Patent & Trademark Office: "The application discloses a processing method for graphite acid purification wastewater which comprises processing steps of neutralization and precipitation preprocessing, supernatant electrically distilling and vaporizing, electric energy recycling, condensate recycling and vaporization residue regularly discharging. The processing method perf...