Fraud prevention system and process for cellular mobile telephone networks
December 31, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3355556 Comprehensive automatic mobile radio telephone system Automatic call transfer system capable of carrying out call transfer without manual operation Cellular mobile radio credit card system Radiotelephone credit card data communications Method of supervising mobile telephone subscriptions in a mobile telephone system Customer activation system Arrangement for identifying subscribers Secure over-the-air registration of cordless telephones Service provision authentication protocol InventorsAssigneeApplicationNo. 816602 filed on 12/31/1991US Classes:380/248, Visiting center340/5.74, Access to electrical information375/130, SPREAD SPECTRUM380/29, NBS/DES algorithm380/30, Public key380/34, Plural carrier frequencies455/410, Security or fraud prevention455/411Privacy, lock-out, or authenticationExaminersPrimary: Gregory, Bernarr E.International ClassesH04L 009/32H04M 011/00 AbstractAn improved mobile telephone system, including a process and apparatus for detecting fraudulent requests for roamer cellular telephone services before the requested service is granted. The improvement comprises a distributed, readily updatable fraud prevention processor which facilitates a plurality of independent, geographically dispersed cooperating cellular networks to each locally determine if a roamer request for service is from a valid, currently authorized user subscriber before cellular telephone service is provided by the visited cellular network.Other References
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