ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,825, issued on April 29, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"On-demand image layer retrieval" was invented by Hao Wu (Wu, China), Xiao Ling Chen (Beijing), Si Yu Chen (Beijing), Lu Yan Li (Beijing), Min Cheng (Beijing), Wen Qi Wq Ye (Beijing) and Xiao Xuan Fu (Wuhan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present invention provide computer-implemented methods, computer program product, and computer systems. One or more processors assign an identifier that specifies a number of resources and a category associated with a respective image layer of a plurality of image layers. One or mor...