US Patent Issued to UNIVERSITY OF HONG KONG VERSITECH on Nov. 3 for "Efficient purification method for nanodiamonds" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,780,667, issued on Nov. 3, was assigned to UNIVERSITY OF HONG KONG VERSITECH Ltd. (Hong Kong, Hong Kong).

"Efficient purification method for nanodiamonds" was invented by Zhiqin Chu (Hong Kong, Hong Kong) and Tongtong Zhang (Hong Kong, Hong Kong).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are methods of purifying nanodiamonds and a method of making essentially pure nanodiamonds each involving mixing nanodiamonds with at least one salt to form a mixture; heating the mixture at a temperature from 200deg C. to 1,000deg C. for a time from 10 minutes to 10 hours; and combining a liquid with the heated mixture and centrifuging at a speed of 30 rcf...