US Patent Issued to Zhongchao Special Security Technology, China Banknote Printing and Minting on May 20 for "Optical anti-counterfeiting element and manufacturing method therefor" (Chinese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,231, issued on May 20, was assigned to Zhongchao Special Security Technology Co. Ltd. (Beijing) and China Banknote Printing and Minting Corp. (Beijing).

"Optical anti-counterfeiting element and manufacturing method therefor" was invented by Chunhua Hu (Beijing), Jun Zhu (Beijing), Weiwei Zhang (Beijing) and Kai Sun (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical anti-counterfeiting element and manufacturing methods of the optical anti-counterfeiting element are provided. The optical anti-counterfeiting element includes an undulating structure layer provided with a first area, a second area and a third area; the first area has a fi...