ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,123, issued on June 23, was assigned to Zhongshan Mulinsen Electronics Co. Ltd. (Zhongshan, China).
"Production process of white coated LED filament" was invented by Baoqing Pi (Zhongshan, China), Jiwei Liu (Zhongshan, China), Yunfeng Zhao (Zhongshan, China), Xuezhao He (Zhongshan, China) and Yahui Xu (Zhongshan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a white coated LED filament and its production process and LED bulb, optimizing the white coated powder from being painted originally on internal surface of the glass shell to be painted on the surface of the filament, thus forms a coated white layer on the ...