US Patent Issued to Nanhu Laboratory on Jan. 27 for "Trademark anti-counterfeiting method based on cryptography" (Chinese Inventor)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,900, issued on Jan. 27, was assigned to Nanhu Laboratory (Jiaxing, China).

"Trademark anti-counterfeiting method based on cryptography" was invented by Lei Zhang (Jiaxing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A trademark anti-counterfeiting method based on cryptography is provided, where a trademark owner prints an anti-counterfeiting code associated with a trademark image through a specific method. A verifier executes following verification process: collecting a trademark image by using a photosensitive device; measuring K feature points of collected trademark image to obtain N groups of color values; calculating M_i' and a hash val...