ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,639, issued on April 22, was assigned to Bayerische Motoren Werke AG (Munich).
"Shading device" was invented by Bernhard Schmid (Hallbergmoos, Germany), Yongpeng Xia (Beijing) and Xiaofei Yang (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A shading device includes a shading curtain and a drawing device. The shading curtain includes a first and second shading layer that have at least two types of light transmission areas with different light transmission properties. The drawing device includes a first and second drawing member. The first drawing member is connected with the first shading layer and is configured to draw the first shading laye...