Data processing: financial – business practice – management – or co – Business processing using cryptography – Secure transaction
Reexamination Certificate
2006-07-31
2010-06-15
Elisca, Pierre E (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Secure transaction
C705S050000, C705S051000
Reexamination Certificate
active
07739198
ABSTRACT:
A reward program directed to registering computer devices and their consumable parts via a computer network generates a unique key code value for each computer device. The key code is generated by a remote server in the computer network and may include appending a sequential counter to the serial number of the device being registered. The key code is then encrypted using a standard hash algorithm. The encrypted key code is saved in a device information database together with other device information and consumable part information related to the computer device. The encrypted key code is also returned to the computer device and saved in the device memory. The device information database is updated with the usage of consumable part information for each registered computer device. Customers also register with the reward program and are assigned to one or more registered computer devices.
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Adkins Christopher A.
Bautista Israel
Gumaroy Jonathan M.
Medina Michelle
Elisca Pierre E
Lexmark International Inc.
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