US Patent Issued to Magic Star Technology(Ningbo)Co. on June 23 for "Method for preparing high-flatness metal foil suitable for making metal mask" (Chinese Inventor)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,721, issued on June 23, was assigned to Magic Star Technology(Ningbo)Co. Ltd. (Ningbo, China).

"Method for preparing high-flatness metal foil suitable for making metal mask" was invented by Dinguo Chen (Ningbo, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method for preparing a high-flatness metal foil suitable for making a metal mask, and the method comprises the following steps: forming a raw metal coarse foil; rolling the raw metal coarse foil at least once into a high-flatness metal foil; performing, by a heat treatment device, heat treatment processing on the precisely rolled metal foil according to a preset temperature a...