ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,866, issued on June 17, was assigned to Inner Mongolia university of technology (Hohhot, China).

"Intelligent system for photovoltaic cleaning robot" was invented by Hexi Baoyin (Hohhot, China), Wenxin Dai (Hohhot, China), Yunfeng Gao (Hohhot, China), Yang Yu (Hohhot, China), Bin Cheng (Hohhot, China), Hongtao Yang (Hohhot, China), Jiachen Zhang (Hohhot, China) and Bitai Hu (Hohhot, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An intelligent system for a photovoltaic cleaning robot includes: a control terminal, an intelligent control center, a stain detection database, and an intelligent device; where the intelligent device includes a camera...