Zhengfang Qian bought a 4.5-bath home at 21575 N. Stoneybrook Court in Kildeer from Well Fargo Bank for $535,000 on July 9.
Wells Fargo previously foreclosed on the property in Oct. 2008. The 4,232-square-foot house was built in 1990 in the Bishops Ridge subdivision in the West of Quentin Road neighborhood.
Quian is principal staff engineer at the Motorola Advanced Technology Center in Schaumburg.
He received his M.S. in chemical engineering in 1985 and his Ph.D. in solid mechanics from the Nanjing University of Technology in China.
There were 48 home sales in Kildeer in 2008, with a median sales price of $675,000.