ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,207,720, issued on Jan. 28.
"Artificial nail" was invented by Guiwen Cai (Guangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An artificial nail is provided, it comprises a nail flake, a guiding groove is provided on a top surface of the nail flake, the guiding groove has a groove depth of d, the guiding groove has a groove width of b, 0.05 mmless than equal todless than equal to0.2 mm, and 0.05 mmless than equal tobless than equal to0.2 mm, and the guiding groove is used for guiding a user to draw a pattern or mount a decorative piece on the top surface of the nail flake. A guiding groove is provided on the nail flake, the guiding groove in...