US Patent Issued to Zhongchao Special Security Technology, China Banknote Printing and Minting on Feb. 25 for "Multi-plating-layer optical anti-counterfeiting element and manufacturing method thereof" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,233,658, issued on Feb. 25, was assigned to Zhongchao Special Security Technology Co. Ltd. (Beijing) and China Banknote Printing and Minting Corp. (Beijing).

"Multi-plating-layer optical anti-counterfeiting element and manufacturing method thereof" was invented by Chunhua Hu (Beijing), Weiwei Zhang (Beijing), Baoli Zhang (Beijing) and Jun Zhu (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical anti-counterfeit element includes an undulating structure layer (2); the undulating structure layer includes a first area (A) with a first microstructure and a second area (B) with a second microstructure; a structural parameter of the second micros...