Patent 5557518 Issued on September 17, 1996. Estimated Expiration Date: April 28, 2014. 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.
705/69, Electronic cash detail (e.g., blinded, divisible, or detecting double spending)235/375, SYSTEMS CONTROLLED BY DATA BEARING RECORDS235/379, Banking systems235/380, Credit or identification card systems235/381, With vending705/17, Having interface for record bearing medium or carrier for electronic funds transfer or payment credit705/44, Requiring authorization or authentication705/68, Balancing account705/74, Anonymous user system705/75, Transaction verification705/76, Electronic credential705/77, Including remote charge determination or related payment system902/1, WITH ELECTRONIC MEANS PROVIDING SECURITY902/2, Protects transmitted data (e.g., encryption or decryption)902/7, Means to identify counterfeit money902/26Including semiconductor chip (e.g., smart card)
A system for open electronic commerce having a customer trusted agent securely communicating with a first money module, and a merchant trusted agent securely communicating with a second money module. Both trusted agents are capable of establishing a first cryptographically secure session, and both money modules are capable of establishing a second cryptographically secure session. The merchant trusted agent transfers electronic merchandise to the customer trusted agent, and the first money module transfers electronic money to the second money module. The money modules inform their trusted agents of the successful completion of payment, and the customer may use the purchased electronic merchandise.
Other References
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April 28, 2014. 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.
