US Patent Issued to C.Uyemura & Co. on Oct. 28 for "Etchant and method of surface treatment of aluminum or aluminum alloy" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,760, issued on Oct. 28, was assigned to C.Uyemura & Co. Ltd. (Osaka, Japan).

"Etchant and method of surface treatment of aluminum or aluminum alloy" was invented by Takuma Maekawa (Osaka, Japan), Katsuhisa Tanabe (Osaka, Japan), Sayuri Tanaka (Osaka, Japan) and Fuminori Shibayama (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention aims to provide an etchant that can provide good deposition of a metal plating such as a nickel plating, despite its acidity, and a method of surface treatment of aluminum or an aluminum alloy using the etchant. Included is an etchant containing a zinc compound and a fluorine compound and hav...