ALEXANDRIA, Va., June 2 -- United States Patent no. 12,648,254, issued on June 2, was assigned to JA Solar Technology Yangzhou Co. Ltd. (Yangzhou City, China).

"Liquid-carrying roller for wet etching and wet etching method" was invented by Lin Lu (Yangzhou City, China), Bin Chen (Yangzhou City, China) and Yunlu Wang (Yangzhou City, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention, which relates to a liquid-carrying roller for wet etching and a wet etching method, belongs to the technical field of solar cell manufacturing, and solves the problem of abnormal roller levelness in a process of manufacturing a solar cell in the prior art. The liquid-carrying roller for wet etching of the inventio...