ALEXANDRIA, Va., July 14 -- United States Patent no. 12,681,901, issued on July 14, was assigned to DELL PRODUCTS LP (Round Rock, Texas).

"De-duplication" was invented by Tianbo Zhang (Shanghai), Heyang Sun (Shanghai), Xiao Le Shang (Shanghai) and Lu Lei (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to de-duplication. An example method includes acquiring mirror files, wherein each mirror file in the mirror files includes at least one layer. The method further includes generating a directory by de-duplicating layers of the mirror files. The method further includes redirecting the de-duplicated mirror files to the directory by using hard links. The method further inclu...