ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,222,916, issued on Feb. 11, was assigned to NEC Corp. (Tokyo).

"Coupling table specification system, coupling table search device, method, and program" was invented by Yuyang Dong (Tokyo) and Masafumi Oyamada (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coupling table search device 530 includes: input means 531 that receives an input of a coupling index from a coupling index storage unit 520; search plan generation means 532 that calculates, for each coupling index, the number of results that is the number of couplable record pairs estimated in a case where a record in a target column is found using the coupling index for each similarity func...