US Patent Issued to HERAEUS PRECIOUS METAL TECHNOLOGY (CHINA) on Oct. 14 for "Method for recovering precious metal from precious metal-containing waste catalyst" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,058, issued on Oct. 14, was assigned to HERAEUS PRECIOUS METAL TECHNOLOGY (CHINA) Co. LTD. (Nanjing, China).

"Method for recovering precious metal from precious metal-containing waste catalyst" was invented by Bin Zhang (Nanjing, China) and Chen Chen (Nanjing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for recovering a precious metal from a precious metal-containing waste catalyst includes the following steps: i) at least partially dissolving a precious metal-containing waste catalyst in an alkaline aqueous solution; ii) performing filtering to obtain a precious metal-containing filtrate and a precious metal; iii) treating the fil...