Michael G Jermyn: Method and apparatus for generating purchase incentive mailing based on prior purchase history. Catalina Marketing International, Oblon Spivak McClelland Maier & Neustadt P C, February 15, 2000: US06026370 (458 worldwide citation)

A technique for customizing mailed purchase incentives for selected consumer households, based on a detailed purchasing history of the consumers. Purchase transactions of many consumers, generally in different stores, are accumulated in a purchase history database over a long period of time and then ...